A dehumidification device

Abstract

This utility model discloses a dehumidification device, comprising: a processing air duct, on which N stages of dehumidification rotors are sequentially arranged; the thickness of each dehumidification rotor is m, where M = m·N, N is a natural number greater than or equal to 2, and M is the target total thickness of the rotor; the final stage dehumidification rotor is a three-zone dehumidification rotor, and the ratio of the central angles of the regeneration zone, pre-cooling zone, and dehumidification zone of the three-zone dehumidification rotor is [1:1:3, 1:1:10]. This utility model's dehumidification device, by setting graded thin dehumidification rotors, breaks down traditional thick rotors into multi-stage thin dehumidification rotors (target total thickness of the rotors). The thin dehumidification rotors shorten the diffusion path of water molecules, allowing heat to penetrate the material layer more easily during regeneration, thus solving the problem of incomplete regeneration caused by excessively thick single rotors.

Description

Technical Field

[0001] This utility model relates to the technical field of air treatment, and in particular to a dehumidification device. Background Technology

[0002] In industrial production, pharmaceutical manufacturing, and electronic equipment production, controlling air humidity is crucial. Traditional dehumidifiers primarily employ a thick dehumidifying impeller structure, using absorbent materials to adsorb moisture from the air, followed by desorption through a heated regeneration zone to achieve cyclic dehumidification. However, this structure suffers from the following problems in practical applications:

[0003] (1) Low dehumidification efficiency: Traditional rotors are thick, which makes it difficult for the moisture-absorbing material in the central area to be fully regenerated and the moisture desorption is incomplete, affecting the subsequent adsorption efficiency, especially when dealing with low dew point air.

[0004] (2) High energy consumption: The regeneration zone of traditional rotors requires continuous high-temperature heating and lacks an effective heat recovery mechanism, resulting in energy waste.

[0005] (3) Poor adaptability: The thick dehumidification wheel structure is difficult to cope with the needs of different humidity environments, such as high humidity fresh air (relative humidity > 80%) and deep dehumidification (dew point < -40℃) scenarios, which often require additional pre-treatment equipment, increasing system complexity and cost.

[0006] To solve at least one of the above-mentioned technical problems, this utility model provides a dehumidification device. Utility Model Content

[0007] The purpose of this invention is to provide a dehumidification device that, by setting up graded thin dehumidification rotors, breaks down the traditional thick rotor into multi-stage thin dehumidification rotors (total target thickness of the rotors). The thin dehumidification rotors can shorten the diffusion path of water molecules, and heat can more easily penetrate the material layer during regeneration, thus solving the problem of incomplete regeneration caused by excessive thickness of a single rotor.

[0008] The objective of this utility model is achieved through the following technical solution:

[0009] A dehumidification device is provided, comprising: a processing air duct, wherein N stages of dehumidification impellers are sequentially arranged on the processing air duct;

[0010] The thickness of the dehumidifying impeller is m, where M = m·N, N is a natural number greater than or equal to 2, and M is the target total thickness of the impeller;

[0011] The final stage dehumidification impeller is a three-zone dehumidification impeller, and the ratio of the central angles of the regeneration zone, precooling zone and dehumidification zone of the three-zone dehumidification impeller is [1:1:3, 1:1:10].

[0012] The beneficial effect of the above solution is that, by setting up a graded thin dehumidification rotor, the traditional thick rotor is divided into a multi-stage thin dehumidification rotor (total target thickness of the rotor). The thin dehumidification rotor can shorten the diffusion path of water molecules, and heat can more easily penetrate the material layer during regeneration, which can solve the problem of incomplete regeneration caused by excessive thickness of a single rotor.

[0013] Furthermore, the ratio of the central angles of the regeneration zone, precooling zone, and dehumidification zone of the three-zone dehumidification rotor is [1:1:6, 1:1:8].

[0014] The beneficial effects of the above solution are that, by reducing the proportion of the regeneration zone and the pre-cooling zone, the area of ​​the dehumidification zone is increased, the wind speed passing through the dehumidification zone is reduced, the contact time between the air and the dehumidification rotor is extended, and the moisture absorption rate is improved. At the same time, by ensuring a certain area of ​​the pre-cooling zone, the temperature of the dehumidification rotor can be reduced, thereby reducing regeneration energy consumption.

[0015] Furthermore, the first-stage dehumidification impeller is a two-zone dehumidification impeller, and the ratio of the central angles of the regeneration zone and the dehumidification zone of the two-zone dehumidification impeller is [1:3, 1:10].

[0016] The beneficial effect of the above solution is that the present invention, through the large-area dehumidification zone of the first-stage dehumidification wheel, prioritizes and efficiently processes high-humidity fresh air, reducing the load on subsequent dehumidification wheels.

[0017] Furthermore, the ratio of the central angles of the regeneration zone and the dehumidification zone of the two-zone dehumidification rotor is [1:6, 1:8].

[0018] The beneficial effects of the above solution are that, by fixing the proportion of the regeneration zone, this utility model expands the dehumidification zone while ensuring the regeneration effect, thereby improving the dehumidification efficiency of the primary dehumidification rotor and reducing the regeneration air volume requirement.

[0019] Furthermore, the thickness of the dehumidifying impeller is 100mm to 400mm; the target total thickness of the impeller is 300mm to 1200mm.

[0020] The beneficial effect of the above solution is that, by using a thin dehumidification rotor, the diffusion path of water molecules within the material is shortened, allowing regenerated hot air to penetrate the entire thickness of the dehumidification rotor and avoiding incomplete desorption in the central area.

[0021] Furthermore, the total thickness of the dehumidifying impeller is 600mm, the number of stages of the dehumidifying impeller is 3, and the thickness of the dehumidifying impeller is 200mm.

[0022] The beneficial effect of the above solution is that this utility model achieves dehumidification in small amounts and multiple times through a three-stage series of thin dehumidification rotors: each stage focuses on the decrease of humidity gradient, and the temperature between stages is controlled by the front surface cooler and the middle surface cooler to maintain the best adsorption conditions, which improves the dehumidification efficiency compared with the two-stage solution.

[0023] Furthermore, the total thickness of the dehumidifying impeller is 600mm, the number of stages of the dehumidifying impeller is 2, and the thickness of the dehumidifying impeller is 300mm.

[0024] The advantages of the above solution are that the present invention simplifies the structure through a two-stage dehumidification rotor, reduces the number of duct connection points, lowers system resistance, and is suitable for space-constrained scenarios. Furthermore, the present invention can compensate for the increased thickness of the dehumidification rotor by optimizing the angle of the regeneration zone, thus maintaining the overall dehumidification efficiency of the device.

[0025] Furthermore, the processing air duct includes:

[0026] A dehumidification duct, wherein the dehumidification duct is sequentially connected to the dehumidification zones of an N-stage dehumidification rotor;

[0027] The downstream of the fresh air duct is connected to the upstream of the dehumidification duct;

[0028] An air supply duct, the upstream of which is connected to the downstream of the dehumidification duct, and the downstream of which is connected to the fresh air duct.

[0029] The beneficial effect of the above solution is that, through the first return air, dry and low-temperature air is mixed with fresh air, and the residual cold of the dry air is used to pre-cool the fresh air, thereby reducing the energy consumption of the front surface cooler and the middle surface cooler.

[0030] Furthermore, the processing air duct includes:

[0031] The regeneration air duct is sequentially connected to the regeneration zone of the N-stage dehumidification impeller, and the downstream of the regeneration air duct is connected to the upstream of the regeneration air duct.

[0032] The beneficial effect of the above solution is that, through the closed-loop setting of the regeneration air, the high-temperature and high-humidity regeneration exhaust air is recycled by the heat exchanger and then re-enters the regeneration zone, realizing the recycling of heat energy, reducing the amount of external heating, and avoiding the emission of high-temperature exhaust gas.

[0033] Furthermore, the processing air duct includes:

[0034] One or more return air ducts are provided, the return air ducts are connected to the pre-cooling zone of the three-zone dehumidification rotor, the upstream of the return air ducts is connected to the dehumidification duct, and the downstream of the return air ducts is connected to the fresh air duct.

[0035] The beneficial effect of the above solution is that the present invention improves the heat recovery rate by using a second return air: recovering the waste heat of the pre-cooling zone to preheat the fresh air.

[0036] Compared with the prior art, the beneficial effects of this utility model include at least the following:

[0037] This invention uses a tiered, thin dehumidifying impeller to break down the traditional thick impeller into multiple thin dehumidifying impellers (total target thickness of the impeller). The thin dehumidifying impeller can shorten the diffusion path of water molecules, and heat can more easily penetrate the material layer during regeneration, thus solving the problem of incomplete regeneration caused by an excessively thick single impeller. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of a dehumidification device according to an embodiment of the present invention.

[0039] Figure 2 This is a schematic diagram of another dehumidification device according to an embodiment of the present invention.

[0040] Figure 3 This is a schematic diagram of another dehumidification device according to an embodiment of the present invention.

[0041] Figure 4 This is a schematic diagram of another dehumidification device according to an embodiment of the present invention.

[0042] Figure 5 This is a schematic diagram of another dehumidification device according to an embodiment of the present invention.

[0043] In the diagram: 11. Primary dehumidifier impeller; 12. Final dehumidifier impeller; 21. Dehumidifier duct; 214. Dehumidifier fan; 215. Pre-cooler; 216. Intermediate cooler; 22. Fresh air duct; 221. Air valve; 222. First pre-filter; 223. Medium-efficiency filter; 23. Supply air duct; 231. Filter cylinder; 24. Regeneration air duct; 241. Second pre-filter; 242. First cooler; 243. Heat exchanger; 244. Heater; 245. Regeneration fan; 25. Return air duct. Detailed Implementation

[0044] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0045] The terms used to describe position and direction in this utility model are illustrated with the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this utility model.

[0046] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] To address the issues of poor dehumidification efficiency and incomplete regeneration caused by excessively thick dehumidification impellers, this invention provides a dehumidification device.

[0049] The dehumidification device of this utility model includes: a treatment air duct and an N-stage dehumidification impeller.

[0050] In this invention, N-stage dehumidification impellers are sequentially arranged on the processing air duct. Here, N is a natural number greater than or equal to 2.

[0051] refer to Figure 1 and Figure 2 When N is 2, the N-stage dehumidification impeller of this utility model includes a first-stage dehumidification impeller 11 and a last-stage dehumidification impeller 12 arranged sequentially. (Reference) Figure 3 , Figure 4 as well as Figure 5When N is greater than 2, the N-stage dehumidification impeller of this utility model includes a first-stage dehumidification impeller 11, a second-stage dehumidification impeller, ..., a N-1th-stage dehumidification impeller and a final-stage dehumidification impeller 12 arranged in sequence.

[0052] In some embodiments, the substrate of the dehumidifying rotor of this invention is a ceramic fiber or metal honeycomb structure, and the surface is coated with silica gel, molecular sieve or composite moisture-absorbing material.

[0053] In some embodiments, the pore size of the moisture-absorbing material of the final stage dehumidifying impeller 12 of this invention is smaller than the pore size of the moisture-absorbing material of the first stage dehumidifying impeller 11.

[0054] In some embodiments, a guide plate or flow equalization net is provided between adjacent dehumidifying impellers of the present invention.

[0055] refer to Figures 1 to 5 In this utility model, at least the final dehumidification rotor 12 is a three-zone dehumidification rotor.

[0056] In some embodiments, reference Figure 1 and Figure 3 In this utility model, only the final dehumidification rotor 12 is a three-zone dehumidification rotor, while the other dehumidification rotors are two-zone dehumidification rotors. This reduces the cost of the dehumidification rotors. At the same time, it can use a large area of ​​dehumidification zone for the initial dehumidification of high-humidity fresh air.

[0057] In some other embodiments, reference is made to... Figure 2 and Figure 5 In this utility model, all the dehumidification rotors in the N-stage dehumidification rotor are three-zone dehumidification rotors.

[0058] In some other embodiments, reference is made to... Figure 1 and Figure 4 In this utility model, except for the first-stage dehumidification rotor 11, which is a two-zone dehumidification rotor, all other dehumidification rotors are three-zone dehumidification rotors.

[0059] This utility model's three-zone dehumidification rotor includes a regeneration zone, a pre-cooling zone, and a dehumidification zone. The ratio of the central angles of the regeneration zone, pre-cooling zone, and dehumidification zone of the three-zone dehumidification rotor is adjustable. By appropriately reducing the area of ​​the regeneration zone and pre-cooling zone and increasing the area of ​​the dehumidification zone, the wind speed through the dehumidification zone is reduced, prolonging the contact time between the air and the dehumidification rotor, thereby improving the dehumidification effect on the air.

[0060] In some embodiments, the ratio of the central angles of the regeneration zone, precooling zone, and dehumidification zone of the three-zone dehumidification rotor of this invention is [1:1:3, 1:1:10], for example 1:1:3, 1:1:4, 1:1:5, 1:1:6, 1:1:7, 1:1:8, 1:1:9, or 1:1:10.

[0061] In some preferred embodiments, the ratio of the central angles of the regeneration zone, pre-cooling zone, and dehumidification zone of the three-zone dehumidification rotor of this invention is [1:1:6, 1:1:8]. By ensuring a certain area of ​​the pre-cooling zone, the temperature of the dehumidification rotor can be reduced, thereby reducing regeneration energy consumption.

[0062] This utility model's two-zone dehumidification rotor includes a regeneration zone and a dehumidification zone. The ratio of the central angles of the regeneration zone and the dehumidification zone in the two-zone dehumidification rotor is adjustable. By appropriately reducing the area of ​​the regeneration zone and increasing the area of ​​the dehumidification zone, the large dehumidification area of ​​the initial rotor can prioritize and efficiently process high-humidity fresh air, reducing the load on subsequent dehumidification rotors.

[0063] In some embodiments, the ratio of the central angles of the regeneration zone and the dehumidification zone of the two-zone dehumidification rotor of this invention is [1:3, 1:10], for example 1:3, 1:4, 1:5, 1:6, 1:7, 1:8, 1:9 or 1:10.

[0064] In some preferred embodiments, the ratio of the central angle of the regeneration zone and the dehumidification zone of the two-zone dehumidification rotor of this invention is [1:6, 1:8].

[0065] The thickness of the dehumidifying impeller of this invention is m. Wherein, M = m·N, and M is the target total thickness of the impeller.

[0066] In some embodiments, the thickness of the dehumidifying rotor of this invention... in, The average thickness of the dehumidification rotor is denoted by 'x'; 'k' is an adjustment parameter, which can range from 0.9 to 1.1, for example, 0.9, 1.0, or 1.1. By using a thinner dehumidification rotor, the diffusion path of water molecules within the material is shortened, allowing regenerated hot air to penetrate the entire thickness of the dehumidification rotor and preventing incomplete desorption in the central area.

[0067] The thickness of the dehumidifying rotor of this invention is 100mm to 400mm, for example, 100mm, 200mm, 300mm, and 400mm. The target total thickness of the rotor of this invention is 300mm to 1200mm, for example, 300mm, 400mm, 500mm, 600mm, 700mm, 800mm, 900mm, 1000mm, 1100mm, and 1200mm.

[0068] In some embodiments, reference Figure 1 and Figure 2When the total thickness of the dehumidifying impeller in this invention is 600mm, the number of dehumidifying impeller stages is 2, and the average thickness of the dehumidifying impeller is 300mm. When the adjustment parameter corresponding to the first-stage dehumidifying impeller 11 is 0.9, the thickness of the first-stage dehumidifying impeller 11 is 270mm; when the adjustment parameter corresponding to the last-stage dehumidifying impeller 12 is 1.1, the thickness of the last-stage dehumidifying impeller 12 is 330mm.

[0069] In some other embodiments, the total thickness of the dehumidifying impeller is 600mm, the number of dehumidifying impeller stages is 2, the adjustment parameter corresponding to each dehumidifying impeller stage is 1.0, and the thickness of each dehumidifying impeller stage is 300mm.

[0070] In some embodiments, reference Figures 3 to 5 When the total thickness of the dehumidifying impeller in this invention is 600mm, the number of dehumidifying impeller stages is 3, and the average thickness of the dehumidifying impeller is 200mm. When the adjustment parameter corresponding to the first-stage dehumidifying impeller 11 is 0.9, the thickness of the first-stage dehumidifying impeller 11 is 180mm; when the adjustment parameter corresponding to the second-stage dehumidifying impeller is 1.0, the thickness of the second-stage dehumidifying impeller is 200mm; when the adjustment parameter corresponding to the final-stage dehumidifying impeller 12 is 1.1, the thickness of the final-stage dehumidifying impeller 12 is 220mm.

[0071] In some other embodiments, the total thickness of the dehumidifying impeller is 600mm, the number of dehumidifying impeller stages is 3, the adjustment parameter corresponding to each dehumidifying impeller stage is 1.0, and the thickness of each dehumidifying impeller stage is 200mm.

[0072] With a fixed total target thickness of the dehumidifying rotor, by appropriately reducing the thickness of the dehumidifying rotor and appropriately increasing the number of dehumidifying rotor stages, multiple small-volume dehumidification can be achieved. Each stage focuses on a decrease in humidity gradient, and the optimal adsorption conditions are maintained through temperature control between stages by the front surface cooler 215 and the middle surface cooler 216, resulting in improved dehumidification efficiency compared to a two-stage solution. Taking a target total rotor thickness of 600mm as an example, the dehumidification effect of the three-stage dehumidifying rotor is 10% better than that of the two-stage dehumidifying rotor.

[0073] refer to Figures 1 to 5 The processing air duct of this utility model includes: a dehumidification air duct 21, a fresh air duct 22, and a supply air duct 23.

[0074] The downstream of the fresh air duct 22 of this utility model is connected to the upstream of the dehumidification duct 21.

[0075] In some embodiments, the fresh air duct 22 of this invention includes a fresh air storage tank, the output end of which is connected to a first pre-filter 222, which is used to filter dust particles and impurities in the fresh air. Further, a damper 221 is provided between the output end of the fresh air storage tank and the first pre-filter 222, which is used to control the supply of fresh air.

[0076] In some preferred embodiments, the output end of the fresh air storage tank is provided with a first primary filter 222 and a medium-efficiency filter 223 in sequence. The medium-efficiency filter 223 is used to further filter the fresh air after it has been filtered by the first primary filter 222, so as to ensure the cleanliness of the air duct and improve the service life of the impeller.

[0077] In some embodiments, the fresh air from the fresh air duct 22 and the return air from the supply air duct 23 are mixed to form high-pressure air, which then passes through the first primary filter 222 and the medium-efficiency filter 223 to filter out dust particles and impurities before entering the dehumidification duct 21.

[0078] The dehumidification duct 21 of this utility model is sequentially connected to the dehumidification zone of the N-stage dehumidification rotor.

[0079] In some embodiments, the dehumidification duct 21 is provided with a dehumidification fan 214, a front surface cooler 215, and a middle surface cooler 216. The dehumidification fan 214 is located upstream of the dehumidification duct 21; the front surface cooler 215 is located at the input end of the dehumidification zone of the first-stage dehumidification impeller 11; and the middle surface cooler 216 is located at the input end of the dehumidification zone of the final-stage dehumidification impeller 12.

[0080] In some preferred embodiments, the input end of the dehumidification zone of the first-stage dehumidification rotor 11 is provided with a front surface cooler 215, and at least one middle surface cooler 216 is provided between the two-stage dehumidification rotors.

[0081] In some embodiments, the dehumidification duct 21 includes an N-level duct section.

[0082] When N is 2, the N-stage air duct section of this utility model includes a first-stage air duct section and a second-stage air duct section arranged sequentially. The upstream of the first-stage air duct section is connected to the downstream of the fresh air duct 22, and the downstream of the first-stage air duct section is connected to the input end of the dehumidification zone of the first-stage dehumidification rotor 11; the upstream of the second-stage air duct section is connected to the output end of the dehumidification zone of the first-stage dehumidification rotor 11, and the downstream of the second-stage air duct section is connected to the input end of the dehumidification zone of the final-stage dehumidification rotor 12.

[0083] When N is greater than 2, the N-level air duct section of this utility model includes a first-level air duct section, a second-level air duct section, ..., an (N-1)th-level air duct section, and an Nth-level air duct section arranged sequentially. The upstream of the first-level air duct section is connected to the downstream of the fresh air duct 22, and the downstream of the first-level air duct section is connected to the input end of the dehumidification zone of the first-level dehumidification rotor 11; the upstream of the second-level air duct section is connected to the output end of the dehumidification zone of the first-level dehumidification rotor 11, and the downstream of the second-level air duct section is connected to the input end of the dehumidification zone of the second-level dehumidification rotor; ...; the upstream of the Nth-level air duct section is connected to the output end of the dehumidification zone of the (N-1)th-level dehumidification rotor, and the downstream of the Nth-level air duct section is connected to the input end of the dehumidification zone of the Nth-level dehumidification rotor.

[0084] The upstream of the air supply duct 23 of this utility model is connected to the downstream of the dehumidification duct 21, and the downstream of the air supply duct 23 is connected to the fresh air duct 22.

[0085] In some embodiments, the air supply duct 23 of this utility model is provided with a material cylinder 231.

[0086] In some embodiments, the upstream of the air supply duct 23 of this invention is connected to the output end of the dehumidification zone of the Nth stage dehumidification rotor, and the downstream of the air supply duct 23 is connected to the upstream of the fresh air duct 22.

[0087] In some other embodiments, the downstream of the supply air duct 23 is connected to the downstream of the fresh air duct 22.

[0088] The processing air duct of this utility model includes: regeneration air duct 24.

[0089] The regeneration air duct 24 of this utility model is sequentially connected to the regeneration zone of the N-stage dehumidification rotor, and the downstream of the regeneration air duct 24 is connected to the upstream of the regeneration air duct 24.

[0090] In some embodiments, the upstream of the regeneration duct 24 of the present invention is provided with regenerated fresh air, a second primary filter 241, a first surface cooler 242 and a heat exchanger 243, and the downstream of the regeneration duct 24 is connected to the input end of the heat exchanger 243.

[0091] In some embodiments, the regeneration duct 24 of this invention is provided with a plurality of regeneration heaters 244. Each dehumidifying impeller has at least one regeneration heater 244 at the input end of the regeneration zone.

[0092] In some embodiments, the regeneration duct 24 of this invention is provided with a plurality of regeneration fans 245. At least one regeneration fan 245 is provided at the output end of the regeneration zone of each dehumidifying impeller.

[0093] In some preferred embodiments, the regeneration duct 24 of this invention is provided with two regeneration fans 245. The output ends of the regeneration zones of the first-stage dehumidification impeller 11 and the last-stage dehumidification impeller 12 are respectively provided with regeneration fans 245.

[0094] The processing air duct of this utility model includes: one or more return air ducts 25.

[0095] In some embodiments, the number of return air ducts 25 of this invention is the same as the number of three-zone dehumidification rotors, with each return air duct 25 connected to the pre-cooling zone of one three-zone dehumidification rotor. By combining the three-zone dehumidification rotor and the return air ducts 25, some of the pre-cooled air can be mixed with fresh air and returned to the dehumidification duct 21 for recycling, thereby increasing the pressure of the mixed air.

[0096] In some further embodiments, the upstream of the return air duct 25 is connected to the dehumidification duct 21, and the downstream of the return air duct 25 is connected to the fresh air duct 22.

[0097] In some embodiments, the return air duct 25 is connected to the pre-cooling zone of a three-zone dehumidification rotor, the upstream of the return air duct 25 is connected to the duct section connected to the input end of the dehumidification zone of the three-zone dehumidification rotor, and the downstream of the return air duct 25 is connected to the downstream of the fresh air duct 22.

[0098] This invention achieves heat recovery through the supply air duct 23 and the return air duct 25 to reduce energy consumption. The invention also uses the regeneration air duct 24 to allow high-temperature, high-humidity regeneration exhaust air to recover waste heat through the heat exchanger 243 before being discharged to the outside, thus reducing heat loss.

[0099] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A dehumidification device, characterized in that, include: The processing air duct is provided with N stages of dehumidification impellers in sequence. The thickness of the dehumidifying impeller is m, where M = m·N, N is a natural number greater than or equal to 2, and M is the target total thickness of the impeller; The final stage dehumidification impeller is a three-zone dehumidification impeller, and the ratio of the central angles of the regeneration zone, precooling zone and dehumidification zone of the three-zone dehumidification impeller is [1:1:3, 1:1:10].

2. The dehumidification apparatus according to claim 1, wherein, The ratio of the central angles of the regeneration zone, precooling zone, and dehumidification zone of the three-zone dehumidification rotor is [1:1:6, 1:1:8].

3. The dehumidification apparatus of claim 1, wherein, The first-stage dehumidification impeller is a two-zone dehumidification impeller, and the ratio of the central angle of the regeneration zone and the dehumidification zone of the two-zone dehumidification impeller is [1:3, 1:10].

4. The dehumidification apparatus according to claim 3, wherein, The ratio of the central angles of the regeneration zone and the dehumidification zone of the two-zone dehumidification rotor is [1:6, 1:8].

5. The dehumidification apparatus of claim 1, wherein, The thickness of the dehumidifying impeller is 100mm to 400mm; the target total thickness of the impeller is 300mm to 1200mm.

6. The dehumidification apparatus of claim 5, wherein, The total thickness of the dehumidifying impeller is 600mm, the number of stages of the dehumidifying impeller is 3, and the thickness of the dehumidifying impeller is 200mm.

7. The dehumidification apparatus of claim 5, wherein, The total thickness of the dehumidifying impeller is 600mm, the number of stages of the dehumidifying impeller is 2, and the thickness of the dehumidifying impeller is 300mm.

8. The dehumidification apparatus of claim 1, wherein, The processing air duct includes: Dehumidification duct (21), wherein the dehumidification duct (21) is sequentially connected to the dehumidification zone of the N-stage dehumidification rotor; A fresh air duct (22) is connected downstream of the dehumidification duct (21); An air supply duct (23) is provided, the upstream of which is connected to the downstream of the dehumidification duct (21), and the downstream of which is connected to the fresh air duct (22).

9. The dehumidification apparatus of claim 1, wherein, The processing air duct includes: A regeneration air duct (24) is connected in sequence to the regeneration zone of the N-stage dehumidification rotor, and the downstream of the regeneration air duct (24) is connected to the upstream of the regeneration air duct (24).

10. The dehumidification apparatus of claim 8, wherein, The processing air duct includes: One or more return air ducts (25) are connected to the pre-cooling zone of the three-zone dehumidification rotor. The upstream of the return air duct (25) is connected to the dehumidification duct (21), and the downstream of the return air duct (25) is connected to the fresh air duct (22).

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