A multi-stage water vapor separation respirator and water vapor separation method for dishwasher

Abstract

The invention discloses a multi-stage water vapor separation respirator for a dishwasher and a water vapor separation method, comprising a shell, an inner liner exhaust interface and a centrifugal fan support are provided on the shell, a centrifugal fan is installed on the centrifugal fan support, a water vapor centrifugal conveying channel, a gas conveying channel, a condensation channel, a water vapor separation net, a drainage channel, an exhaust channel and a water tank are provided in the shell, the air inlet of the centrifugal fan is connected to the inner liner exhaust interface, the air outlet of the centrifugal fan is connected to the upper end of the water vapor centrifugal conveying channel, the lower end of the water vapor centrifugal conveying channel is connected to the top of the water vapor separation net, the drainage channel is connected to the bottom of the water vapor separation net, the lower end opening of the gas conveying channel and the lower end opening of the condensation channel are connected to the lower end opening of the water vapor centrifugal conveying channel, the upper end opening of the gas conveying channel and the upper end opening of the condensation channel are connected to the exhaust channel, and the condensation channel extends along the outer side wall of the water tank. The invention can efficiently perform water vapor separation.

Description

Technical Field

[0001] The invention relates to a dishwasher, and in particular to a multi-stage water vapor separation respirator and a water vapor separation method for the dishwasher. Background Art

[0002] A dishwasher is an automatic dishwashing device. A large amount of water vapor will be generated during its operation. The water vapor will cause the air pressure in the inner tank of the dishwasher to increase. Therefore, the water vapor needs to be discharged in time and separated into water and gas to realize the respirator function. For the means of realizing water vapor separation in the prior art, please refer to the Chinese patent publication with publication number CN106821265A. In such mechanisms, condensation is generally used to realize water vapor separation. However, the condensation method has problems such as low water condensation efficiency and insufficient water vapor separation. This causes the gas outlet of the respirator to discharge uncondensed water vapor, which cannot meet the application requirements of the dishwasher. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a multi-stage water vapor separation respirator and a water vapor separation method thereof which can efficiently perform water vapor separation in view of the deficiencies in the prior art.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions.

[0005] A multi-stage water vapor separation respirator for a dishwasher, comprising a shell, the shell being provided with an inner tank exhaust interface and a centrifugal fan support, a centrifugal fan being installed on the centrifugal fan support, the shell being provided with a water vapor centrifugal conveying channel, a gas conveying channel, a condensation channel, a water vapor separation net, a drainage channel, an exhaust channel and a water tank, the air inlet of the centrifugal fan being connected with the inner tank exhaust interface, the air outlet of the centrifugal fan being connected with the upper end of the water vapor centrifugal conveying channel, the lower end of the water vapor centrifugal conveying channel being connected with the top of the water vapor separation net, the drainage channel being connected with the bottom of the water vapor separation net, the lower end opening of the gas conveying channel and the lower end opening of the condensation channel being both connected with the lower end opening of the water vapor centrifugal conveying channel, the upper end opening of the gas conveying channel and the upper end opening of the condensation channel being both connected with the exhaust channel, and the condensation channel extending along the outer side wall of the water tank.

[0006] Preferably, the water vapor centrifugal transport channel, the gas transport channel and the condensation channel are all arranged vertically.

[0007] Preferably, the water outlet of the drainage channel and the air outlet of the air exhaust channel are both located at the bottom of the shell.

[0008] Preferably, the inner tank exhaust port and the centrifugal fan support are respectively arranged on two sides of the shell.

[0009] Preferably, a support partition is provided on the centrifugal fan support, an inner cavity is formed between the support partition and the inner wall of the shell, the inner cavity is connected to the exhaust interface of the inner tank, and a water vapor through hole is opened on the support partition, and the water vapor through hole faces the air inlet of the centrifugal fan.

[0010] Preferably, a water vapor cavity is provided in the shell, and the water vapor cavity is connected between the exhaust port of the inner tank and the inner cavity.

[0011] Preferably, a first arc-shaped baffle is formed in the water vapor cavity, the first arc-shaped baffle is located outside the exhaust port of the inner tank and the two are concentrically arranged, and there are gaps between the two ends of the first arc-shaped baffle and the inner walls of the water vapor cavity on both sides.

[0012] Preferably, a second arc-shaped baffle is provided in the water vapor cavity, one end of the second arc-shaped baffle is connected to the inner wall of the water vapor cavity, and the other end of the second arc-shaped baffle is inclined downward.

[0013] Preferably, a water storage channel is provided in the shell, and both upper and lower ends of the water storage channel are connected to the water tank, and the condensation channel is located between the water tank and the water storage channel.

[0014] Preferably, a plurality of vertical guide plates are provided in the water vapor centrifugal transport channel.

[0015] A method for separating water vapor of a multi-stage water vapor separation respirator, the multi-stage water vapor separation respirator comprising a shell, the shell being provided with an inner liner exhaust interface and a centrifugal fan support, the centrifugal fan support being provided with a centrifugal fan, the shell being provided with a water vapor centrifugal conveying channel, a gas conveying channel, a condensation channel, a water vapor separation net, a drainage channel, an exhaust channel and a water tank, the air inlet of the centrifugal fan being communicated with the inner liner exhaust interface, the air outlet of the centrifugal fan being communicated with the upper end of the water vapor centrifugal conveying channel, the lower end of the water vapor centrifugal conveying channel being communicated with the top of the water vapor separation net, the drainage channel being communicated with the bottom of the water vapor separation net, the lower end opening of the gas conveying channel and the lower end opening of the condensation channel being both communicated with the lower end opening of the water vapor centrifugal conveying channel, the upper end opening of the gas conveying channel and the upper end opening of the condensation channel being both communicated with the exhaust channel, the condensation channel extending along the outer side wall of the water tank, The water vapor separation method comprises the following steps: a water vapor extraction step: when the centrifugal fan is running, the water vapor generated in the inner tank of the dishwasher is extracted through the inner tank exhaust interface and transported to the water vapor centrifugal transport channel; a primary water vapor separation step: under the action of the centrifugal force generated when the centrifugal fan is running, a part of the water in the water vapor is driven to the water vapor separation net, and the gas after centrifugal separation enters the gas transport channel; a secondary water vapor separation step: under the blocking action of the water vapor separation net, the water in the water vapor passes through the water vapor separation net and enters the drainage channel, and the gas after the secondary water vapor separation enters the gas transport channel; a tertiary water vapor separation step: after the water vapor separation in the above steps, the remaining water vapor enters the condensation channel, and condenses into water on the inner wall of the condensation channel, and the condensed water flows along the inner wall of the condensation channel to the water vapor separation net; an exhaust step: the gas discharged from the upper end of the condensation channel and the gas discharged from the upper end of the gas transport channel enter the exhaust channel.

[0016] In the multi-stage water vapor separation respirator for a dishwasher disclosed in the present invention, a centrifugal fan support and a centrifugal fan installed on the centrifugal fan support are arranged on the shell, and at the same time, the water vapor centrifugal conveying channel, the gas conveying channel, the condensation channel and the water vapor separation net are arranged in the shell except for the water tank. The working principle is as follows: when the centrifugal fan is running, the water vapor generated in the inner tank of the dishwasher is extracted through the inner tank exhaust interface, and then the water vapor is conveyed to the water vapor centrifugal conveying channel. Under the action of the centrifugal force generated by the centrifugal fan when running, a part of the water in the water vapor is driven to be thrown toward the water vapor separation net, and the gas after centrifugal separation enters the gas conveying channel, thereby completing the first-level water vapor separation, and then enters the second-level water vapor separation step. Under the blocking effect, water in the water vapor passes through the water vapor separation net and enters the drainage channel. At the same time, the gas after water vapor separation enters the gas delivery channel. On this basis, three-stage water vapor separation is realized based on the condensation principle. Specifically, the remaining water vapor after the water vapor separation in the above steps enters the condensation channel and condenses into water on the inner wall of the condensation channel. The condensed water flows along the inner wall of the condensation channel to the water vapor separation net, and then gathers in the drainage channel. After the above-mentioned three-stage water vapor separation, the water is discharged from the drainage channel. At the same time, the gas discharged from the upper end of the condensation channel and the gas discharged from the upper end of the gas delivery channel enter the exhaust channel. Based on the above-mentioned multi-stage water vapor separation principle, the present invention can quickly and efficiently complete water vapor separation, and better meet the application requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The three-dimensional diagram of the multi-stage water vapor separation respirator in the first embodiment of the present invention is shown in FIG. Figure 1 ;

[0018] Figure 2 The three-dimensional diagram of the multi-stage water vapor separation respirator in the first embodiment of the present invention is shown in FIG. Figure 2 ;

[0019] Figure 3 A top view of a multi-stage water vapor separation respirator in a first embodiment of the present invention;

[0020] Figure 4 for Figure 3 A sectional stereogram along line BB in the middle;

[0021] Figure 5 for Figure 3 Sectional view along line BB;

[0022] Figure 6 for Figure 3 A sectional stereogram along line AA in the middle;

[0023] Figure 7 The three-dimensional diagram of the multi-stage water vapor separation respirator in the first embodiment of the present invention is shown in FIG. Figure 3 ;

[0024] Figure 8 for Figure 7 Enlarged view of part C;

[0025] Fig. 9 The present invention is a flow chart of the water vapor separation method of the multi-stage water vapor separation respirator.

[0026] Fig.10 is a cross-sectional view of a multi-stage water vapor separation respirator in a second embodiment of the present invention;

[0027] Fig.11 2 is a cross-sectional view of a multi-stage water vapor separation respirator in a third embodiment of the present invention. DETAILED DESCRIPTION

[0028] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. Embodiment 1

[0029] This embodiment proposes a multi-stage water vapor separation respirator for a dishwasher. Figures 1 to 8 As shown, it includes a shell 1, on which an inner tank exhaust interface 2 and a centrifugal fan support 3 are provided, on which a centrifugal fan is installed, and in the shell 1 a water vapor centrifugal conveying channel 4, a gas conveying channel 5, a condensation channel 6, a water vapor separation net 7, a drainage channel 8, an exhaust channel 9 and a water tank 10 are provided, the air inlet of the centrifugal fan is connected with the inner tank exhaust interface 2, the air outlet of the centrifugal fan is connected with the upper end of the water vapor centrifugal conveying channel 4, the lower end of the water vapor centrifugal conveying channel 4 is connected with the top of the water vapor separation net 7, the drainage channel 8 is connected with the bottom of the water vapor separation net 7, the lower end opening of the gas conveying channel 5 and the lower end opening of the condensation channel 6 are both connected with the lower end opening of the water vapor centrifugal conveying channel 4, the upper end opening of the gas conveying channel 5 and the upper end opening of the condensation channel 6 are both connected with the exhaust channel 9, and the condensation channel 6 extends along the outer wall of the water tank 10.

[0030] In the above structure, a centrifugal fan support 3 and a centrifugal fan installed on the centrifugal fan support 3 are arranged on the shell 1, and at the same time, the water vapor centrifugal conveying channel 4, the gas conveying channel 5, the condensation channel 6 and the water vapor separation net 7 are arranged in the shell 1 except the water tank 10. When the centrifugal fan is running, the water vapor generated in the inner tank of the dishwasher is extracted through the inner tank exhaust interface 2, and then the water vapor is transported to the water vapor centrifugal conveying channel 4. Under the action of the centrifugal force generated when the centrifugal fan is running, a part of the water in the water vapor is driven to the water vapor separation net 7. The gas after centrifugal separation enters the gas conveying channel 5, thereby completing the primary water vapor separation, and then enters the secondary water vapor separation step. Under the blocking effect of the water vapor separation net 7, the water in the water vapor After passing through the water vapor separation net 7, it enters the drainage channel 8. At the same time, the gas after the secondary water vapor separation enters the gas delivery channel 5. On this basis, the three-stage water vapor separation is realized based on the condensation principle. Specifically, the remaining water vapor after the water vapor separation in the above steps enters the condensation channel 6, and condenses into water on the inner wall of the condensation channel 6. The condensed water flows along the inner wall of the condensation channel 6 to the water vapor separation net 7, and then gathers in the drainage channel 8. After the above-mentioned three-stage water vapor separation, the water is discharged from the drainage channel 8. At the same time, the gas discharged from the upper end of the condensation channel 6 and the gas discharged from the upper end of the gas delivery channel 5 enter the exhaust channel 9. Based on the above-mentioned multi-stage water vapor separation principle, the present invention can quickly and efficiently complete water vapor separation, and better meet the application requirements.

[0031] In order to ensure that the separated water is discharged downward and the gas is discharged upward, in this embodiment, see Figure 5 The water vapor centrifugal conveying channel 4, the gas conveying channel 5 and the condensation channel 6 are all arranged vertically.

[0032] As a preferred embodiment, the water outlet of the drainage channel 8 and the air outlet of the air exhaust channel 9 are both located at the bottom of the shell 1 .

[0033] For the convenience of installation, in the present embodiment, the inner tank exhaust port 2 and the centrifugal fan support 3 are respectively arranged on two sides of the shell 1 .

[0034] Combination Figure 5 , Figure 7 and Figure 8 As shown, in this embodiment, a support partition 30 is provided on the centrifugal fan support 3, an inner cavity 31 is formed between the support partition 30 and the inner wall of the shell 1, the inner cavity 31 is connected to the inner tank exhaust interface 2, and a water vapor through hole 32 is opened on the support partition 30, and the water vapor through hole 32 faces the air inlet of the centrifugal fan.

[0035] Furthermore, a water vapor chamber 20 is provided in the shell 1 , and the water vapor chamber 20 is connected between the inner tank exhaust port 2 and the inner chamber 31 .

[0036] In the above structure, the water vapor chamber 20 can play a buffering role on the water vapor, so that the water vapor can be continuously and evenly transported to the water vapor centrifugal transport channel 4, thereby fully completing the primary water vapor separation.

[0037] In order to avoid the generation of air waves, in this embodiment, combined with Figure 4 and Figure 5 As shown, a first arc-shaped baffle plate 21 is formed in the water vapor cavity 20 , and the first arc-shaped baffle plate 21 is located on the outer side of the inner tank exhaust interface 2 and the two are concentrically arranged, and there are gaps between the two ends of the first arc-shaped baffle plate 21 and the inner walls on both sides of the water vapor cavity 20 .

[0038] Furthermore, a second arc-shaped baffle plate 22 is provided in the water vapor cavity 20 , one end of the second arc-shaped baffle plate 22 is connected to the inner wall of the water vapor cavity 20 , and the other end of the second arc-shaped baffle plate 22 is inclined downward.

[0039] In the above structure, the first arc-shaped baffle 21 and the second arc-shaped baffle 22 can block the water vapor discharged from the inner tank exhaust port 2, thereby avoiding adverse effects on the subsequent water vapor separation step due to the generation of air waves.

[0040] In order to further improve the condensation efficiency, in this embodiment, a water storage channel 11 is provided in the housing 1, and the upper and lower ends of the water storage channel 11 are both connected to the water tank 10, and the condensation channel 6 is located between the water tank 10 and the water storage channel 11. The water level in the condensation channel 6 is flush with the housing 1, so that in this embodiment, cold walls are formed on both sides of the condensation channel 6 to improve the heat exchange efficiency and make the water condense more fully on the cold wall.

[0041] As a preferred embodiment, a plurality of vertical guide plates 40 are provided in the water vapor centrifugal transport channel 4 .

[0042] On this basis, the present invention also relates to a water vapor separation method of a multi-stage water vapor separation respirator, combined with Figures 1 to 8As shown, the multi-stage water vapor separation respirator includes a shell 1, on which an inner tank exhaust interface 2 and a centrifugal fan support 3 are provided, on which a centrifugal fan is installed, and the shell 1 is provided with a water vapor centrifugal conveying channel 4, a gas conveying channel 5, a condensation channel 6, a water vapor separation net 7, a drainage channel 8, an exhaust channel 9 and a water tank 10, the air inlet of the centrifugal fan is connected to the inner tank exhaust interface 2, the air outlet of the centrifugal fan is connected to the upper end of the water vapor centrifugal conveying channel 4, the lower end of the water vapor centrifugal conveying channel 4 is connected to the top of the water vapor separation net 7, the drainage channel 8 is connected to the bottom of the water vapor separation net 7, the lower end opening of the gas conveying channel 5 and the lower end opening of the condensation channel 6 are both connected to the lower end opening of the water vapor centrifugal conveying channel 4, the upper end opening of the gas conveying channel 5 and the upper end opening of the condensation channel 6 are both connected to the exhaust channel 9, and the condensation channel 6 extends along the outer side wall of the water tank 10, see Fig. 9 , the water vapor separation method comprises the following steps:

[0043] Water vapor extraction step: when the centrifugal fan is running, the water vapor generated in the inner tank of the dishwasher is extracted through the inner tank exhaust interface 2 and transported to the water vapor centrifugal transport channel 4;

[0044] Primary water vapor separation step: under the action of the centrifugal force generated when the centrifugal fan is running, a part of the water in the water vapor is driven to the water vapor separation net 7, and the gas after centrifugal separation enters the gas delivery channel 5;

[0045] Secondary water vapor separation step: under the blocking effect of the water vapor separation net 7, water in the water vapor passes through the water vapor separation net 7 and enters the drainage channel 8, and the gas after the secondary water vapor separation enters the gas delivery channel 5;

[0046] Third-stage water vapor separation step: After the water vapor separation in the above steps, the remaining water vapor enters the condensation channel 6 and condenses into water on the inner wall of the condensation channel 6. The condensed water flows along the inner wall of the condensation channel 6 to the water vapor separation net 7;

[0047] Exhaust step: The gas exhausted from the upper end of the condensation channel 6 and the gas exhausted from the upper end of the gas delivery channel 5 enter the exhaust channel 9.

[0048] In the above method, when the first-stage water vapor separation step is performed, due to the different densities of gas and liquid, when the liquid and gas are mixed and rotated, the centrifugal force on the liquid is greater than that on the gas, so the liquid tends to be centrifugally separated. The liquid adheres to the separation wall and is gathered together downward due to the action of gravity, and finally discharged through the drain pipe. When the second-stage water vapor separation step is performed, due to the different particle sizes of gas and liquid, when the liquid and gas are mixed and flow through the wire mesh, it is like passing through a sieve, and the liquid is intercepted and remains on the wire mesh. Because the tiny pores of the wire mesh are filled with liquid, the gas cannot pass through, and the gas enters the gas transmission channel from other directions. The liquid flows to the drainage channel under the action of gravity and is finally discharged. When the third-stage water vapor separation step is performed, because the temperature of the cold water tank wall is lower than the temperature of the hot and humid gas in the dishwasher tank, the water vapor in the dishwasher tank precipitates on the cold water tank wall and condenses. When the dew drops increase to a certain extent, condensed water is formed, which slides down to the water vapor separation net and is finally discharged through the drainage channel. Based on the above principle, compared with the water vapor separation means in the prior art, the present invention greatly improves the water vapor separation efficiency, thereby improving the overall performance of the dishwasher.

[0049] In practical applications, the water vapor separation net 7 can be adjusted to other installation positions according to the different mesh sizes and air permeabilities of the water vapor separation net 7. Please refer to the second and third embodiments for details. Embodiment 2

[0050] See also Fig.10 As an alternative, in this embodiment, the water vapor separation net 7 can be a wire mesh with slightly larger mesh size and higher air permeability. At this time, the water vapor separation net 7 can be directly arranged in the water vapor centrifugal transport channel 4 and the gas transport channel 5. Its function is to ensure that the remaining water vapor can pass through while water condenses on the wire mesh.

[0051] In actual applications, after the water vapor passes through the water vapor separation net 7, the separated water condenses on the wire mesh, and the gas passing through the water vapor separation net 7 flows to the gas delivery channel 5. The gas in this channel inevitably contains incompletely separated moisture. In order to enhance the water vapor separation, a structure as shown in Example 3 can be adopted at this time. Embodiment 3

[0052] See also Fig.11As another alternative, in this embodiment, two water vapor separation nets 7 can be provided, one of which is a wire mesh with slightly larger meshes and higher air permeability, and the other is a wire mesh with slightly smaller meshes and lower air permeability. In actual application, the wire mesh with slightly larger meshes and higher air permeability can be directly arranged in the water vapor centrifugal transport channel 4 and the gas transport channel 5, and the wire mesh with slightly smaller meshes and lower air permeability can be arranged below the water vapor centrifugal transport channel 4 and the gas transport channel 5, thereby improving the water condensation efficiency and allowing water vapor to pass under appropriate conditions.

[0053] It should be noted that the above-mentioned embodiments 2 and 3 are only replacements for embodiment 1. In actual applications, the technical solution of the present invention is not limited to the above-mentioned embodiments 1, 2 and 3. That is, under the inspiration of embodiments 1, 2 and 3, no matter where the water vapor separation net is installed, as long as it can intercept water vapor and facilitate water condensation, it is an equivalent replacement based on the technical solution of the present invention, and therefore belongs to the protection scope of the present invention.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the technical scope of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-stage water vapor separation respirator for a dishwasher, characterized in that: The invention comprises a shell (1), the shell (1) being provided with an inner liner exhaust interface (2) and a centrifugal fan support (3), the centrifugal fan support (3) being provided with a centrifugal fan, the shell (1) being provided with a water vapor centrifugal conveying channel (4), a gas conveying channel (5), a condensation channel (6), a water vapor separation net (7), a drainage channel (8), an exhaust channel (9) and a water tank (10), the air inlet of the centrifugal fan being connected to the inner liner exhaust interface (2), and the air outlet of the centrifugal fan being connected to the upper end of the water vapor centrifugal conveying channel (4) The lower end of the water vapor centrifugal transport channel (4) is connected to the top of the water vapor separation net (7), the drainage channel (8) is connected to the bottom of the water vapor separation net (7), the lower end opening of the gas transport channel (5) and the lower end opening of the condensation channel (6) are both connected to the lower end opening of the water vapor centrifugal transport channel (4), the upper end opening of the gas transport channel (5) and the upper end opening of the condensation channel (6) are both connected to the exhaust channel (9), and the condensation channel (6) extends along the outer side wall of the water tank (10); The water vapor centrifugal transport channel (4), the gas transport channel (5) and the condensation channel (6) are all arranged vertically; A support partition (30) is provided on the centrifugal fan support (3), an inner cavity (31) is formed between the support partition (30) and the inner wall of the shell (1), the inner cavity (31) is connected to the inner tank exhaust interface (2), and a water vapor through hole (32) is opened on the support partition (30), and the water vapor through hole (32) faces the air inlet of the centrifugal fan; A water vapor chamber (20) is provided in the shell (1), and the water vapor chamber (20) is connected between the inner liner exhaust port (2) and the inner chamber (31); A first arc-shaped baffle (21) is formed in the water vapor cavity (20), the first arc-shaped baffle (21) is located outside the inner liner exhaust port (2) and the two are arranged concentrically, and gaps are provided between the two ends of the first arc-shaped baffle (21) and the inner walls of the water vapor cavity (20) on both sides; A second arc-shaped baffle (22) is provided in the water vapor cavity (20), one end of the second arc-shaped baffle (22) is connected to the inner wall of the water vapor cavity (20), and the other end of the second arc-shaped baffle (22) is inclined obliquely downward; A plurality of vertical guide plates (40) are provided in the water vapor centrifugal transport channel (4).

2. The multi-stage water vapor separation respirator for a dishwasher according to claim 1, characterized in that: The water outlet of the drainage channel (8) and the air outlet of the air exhaust channel (9) are both located at the bottom of the shell (1).

3. The multi-stage water vapor separation respirator for a dishwasher according to claim 1, characterized in that: The inner tank exhaust port (2) and the centrifugal fan support (3) are respectively arranged on two sides of the shell (1).

4. The multi-stage water vapor separation respirator for a dishwasher according to claim 1, characterized in that: A water storage channel (11) is provided in the housing (1), and both upper and lower ends of the water storage channel (11) are connected to the water tank (10), and the condensation channel (6) is located between the water tank (10) and the water storage channel (11).

5. A method for separating water vapor from a multi-stage water vapor separation respirator, characterized in that: The multi-stage water vapor separation respirator is the multi-stage water vapor separation respirator according to claim 1, and the water vapor separation method comprises the following steps: Water vapor extraction step: when the centrifugal fan is in operation, the water vapor generated in the inner tank of the dishwasher is extracted through the inner tank exhaust interface (2) and transported to the water vapor centrifugal transport channel (4); A first-stage water vapor separation step: under the action of the centrifugal force generated when the centrifugal fan is running, a portion of the water in the water vapor is driven toward the water vapor separation net (7), and the gas after centrifugal separation enters the gas delivery channel (5); Secondary water vapor separation step: under the blocking effect of the water vapor separation net (7), water in the water vapor passes through the water vapor separation net (7) and enters the drainage channel (8), and the gas after the secondary water vapor separation enters the gas delivery channel (5); A third-stage water vapor separation step: after the water vapor separation in the above-mentioned step, the remaining water vapor enters the condensation channel (6) and condenses into water on the inner wall of the condensation channel (6), and the condensed water flows along the inner wall of the condensation channel (6) toward the water vapor separation net (7); Exhaust step: the gas exhausted from the upper end of the condensation channel (6) and the gas exhausted from the upper end of the gas delivery channel (5) enter the exhaust channel (9).

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