A rotary dehumidifier

Abstract

The utility model discloses a rotary dehumidifier, including a first rotary wheel, a second rotary wheel, a first heat recovery device and a second heat recovery device, a dehumidification air duct and a regeneration air duct. The first-stage surface cooler, the first rotary wheel moisture absorption zone, and the second rotary wheel moisture absorption zone are sequentially arranged in the dehumidification air duct along the direction of fresh air flow; the second rotary wheel regeneration heating device, the second rotary wheel regeneration zone, and the first rotary wheel regeneration zone are sequentially arranged in the regeneration air duct along the direction of regeneration air flow; the first heat recovery device is arranged in the regeneration air duct, and is used to recover the exhaust heat discharged through the first rotary wheel regeneration zone; the second heat recovery device is arranged in the regeneration air duct, and the second heat recovery device is connected to the first heat recovery device, and is heated by the first heat recovery device, and is used to heat the air entering the second rotary wheel regeneration zone. The above rotary dehumidifier recovers heat from the exhaust of the regeneration air, and the recovered heat can be used to assist in heating the air entering the second rotary wheel regeneration zone, thereby reducing energy consumption.

Description

Technical Field

[0001] The utility model relates to the technical field of air treatment, in particular to a rotary dehumidifier. Background Art

[0002] As a highly efficient air treatment equipment, rotary dehumidifiers are widely used in various environments that require strict humidity control, such as pharmaceutical, electronic, food processing and other industries. Its core technology is to use a rotary wheel containing a highly efficient adsorbent (such as silica gel or zeolite) to remove moisture from the air through physical adsorption. In this process, the rotary wheel will absorb moisture in the "hygroscopic area", and then decompose and absorb the adsorbed water in the "regeneration area" by heating, so that the rotary wheel can restore its adsorption capacity and continue the next round of dehumidification operation.

[0003] In the existing rotary dehumidifier design, in order to ensure the effective regeneration of the adsorbent, the regeneration air usually needs to be heated to a higher temperature, such as around 130°C, which means that a large amount of power needs to be consumed in the electric heating device. The resulting problem is that the operating energy consumption of the equipment is significantly increased.

[0004] At the same time, the high-temperature waste gas (about 60°C) generated during the regeneration process is often directly discharged into the surrounding environment and is not effectively utilized, which not only causes a large amount of waste heat resources to be wasted, but also increases the energy costs and environmental burden of users. In view of this, how to reduce the regeneration energy consumption of the rotary dehumidifier and recycle the waste heat generated during the regeneration process has become a technical problem and research direction that needs to be solved urgently.

[0005] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0006] In response to the problems pointed out in the background technology, the present application provides a rotary dehumidifier, which can not only avoid the direct discharge of high-temperature exhaust gas into the surrounding environment by recovering heat from the regenerated air exhaust, but the recovered heat can also be used to assist in heating the air entering the second rotary wheel regeneration zone, thereby reducing energy consumption.

[0007] In order to achieve the above-mentioned utility model purpose, the utility model adopts the following technical solutions:

[0008] In some embodiments of the present application, a rotary dehumidifier is provided, comprising:

[0009] A housing is provided with a fresh air inlet, an air supply inlet, and a regeneration air exhaust outlet; the fresh air inlet and the air supply inlet are connected through a dehumidification air duct; the regeneration air exhaust outlet is connected to the regeneration air duct;

[0010] A first rotor, comprising a first rotor moisture absorption zone and a first rotor regeneration zone;

[0011] A second rotor, comprising a second rotor moisture absorption zone and a second rotor regeneration zone;

[0012] The primary surface cooler, the first rotary wheel moisture absorption zone, and the second rotary wheel moisture absorption zone are sequentially arranged in the dehumidification air duct along the direction of fresh air flow;

[0013] The second rotor regeneration heating device, the second rotor regeneration zone, and the first rotor regeneration zone are sequentially arranged in the regeneration air duct along the regeneration air flow direction;

[0014] A first heat recovery device, disposed in the regeneration air duct, for recovering the exhaust heat discharged through the first rotor regeneration zone;

[0015] The second heat recovery device is arranged in the regeneration air duct and is located on the air inlet side of the second wheel regeneration zone; the second heat recovery device is connected to the first heat recovery device and is supplied with heat by the first heat recovery device for heating the air entering the second wheel regeneration zone.

[0016] Double-rotor dehumidification has high dehumidification efficiency; the first heat recovery device recovers heat from the regenerated air exhaust, which not only avoids the direct discharge of high-temperature exhaust gas into the surrounding environment, but the recovered heat can also be used to assist in heating the air entering the regeneration area of ​​the second wheel, reducing energy consumption.

[0017] In some embodiments of the present application, a third heat recovery device is further included, which is arranged in the dehumidification air duct and located at the air inlet side of the first rotor moisture absorption zone; the second heat recovery device is connected to the first heat recovery device and is heated by the first heat recovery device to heat the air entering the first rotor moisture absorption zone. The third heat recovery device is used to heat the winter wind and heat the air to a suitable dehumidification temperature of the rotor to improve the dehumidification efficiency of the rotor.

[0018] In some embodiments of the present application, a first rotor regeneration heating device is further included, and the first rotor regeneration heating device is used to heat the air entering the first rotor regeneration zone. The first rotor regeneration heating device heats the air entering the first rotor to improve the regeneration capacity of the first rotor.

[0019] In some embodiments of the present application, the second wheel also includes a second wheel return air zone, the air inlet side of the second wheel return air zone is connected to the dehumidification air duct, a return air inlet duct is connected between the air outlet side of the second wheel return air zone and the air inlet side of the second wheel regeneration zone, the second heat recovery device is arranged in the return air inlet duct, and the air outlet side of the second wheel regeneration air is connected to the air inlet side of the first wheel regeneration zone through the regeneration air duct.

[0020] In some embodiments of the present application, the housing is provided with an indoor return air port, the indoor return air port is connected to the dehumidification air duct, and the indoor air entering through the indoor return air port enters between the first rotor moisture absorption zone and the second rotor moisture absorption zone. The fresh air and the indoor return air are mixed in a certain proportion, and can be precisely controlled by the air valve to ensure indoor air quality and energy saving effect.

[0021] In some embodiments of the present application, it also includes a primary filter device arranged in the dehumidification air duct, the primary filter device is arranged on the rear side of the fresh air outlet, and the primary surface cooler is arranged on the air outlet side of the primary filter device.

[0022] In some embodiments of the present application, a secondary surface cooler is also included, which is arranged in the dehumidification air duct and located on the air inlet side of the secondary rotor moisture absorption zone.

[0023] In some embodiments of the present application, a three-stage surface cooler is further included, which is arranged in the dehumidification air duct and located at the air outlet side of the secondary rotor moisture absorption zone. By arranging a multi-stage surface cooler, the dehumidification effect is improved.

[0024] In some embodiments of the present application, the housing includes:

[0025] An upper shell, the fresh air inlet and the regeneration air outlet are arranged on the upper shell, and the first-stage surface cooler and the first rotor are arranged in the upper shell;

[0026] The lower shell is arranged at the lower side of the upper shell, the air outlet is arranged on the lower shell, and the second rotating wheel is arranged in the lower shell. The double-layer shell structure occupies a small area and is convenient for disassembly and assembly.

[0027] In some embodiments of the present application, a heat recovery control assembly is also included, which is connected to the first heat recovery device, the second heat recovery device and the third heat recovery device, and is used to control the first heat recovery device, the second heat recovery device and the third heat recovery device.

[0028] Compared with the prior art, the advantages and positive effects of the utility model are:

[0029] In the above embodiment, the rotary dehumidifier adopts double-rotor dehumidification, which not only has high dehumidification efficiency, but also utilizes the waste heat gas that originally needs to be discharged from the second wheel to regenerate the first wheel, saving energy; at the same time, by recovering the heat of the regenerated air exhaust, not only can the high-temperature exhaust gas be prevented from being directly discharged into the surrounding environment, but the recovered heat can also be used to assist in heating the air entering the regeneration area of ​​the second wheel, further reducing energy consumption and reducing the operating cost of the entire machine.

[0030] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 A perspective view showing a rotary dehumidifier according to some embodiments;

[0033] Figure 2 A perspective view showing a rotary dehumidifier according to some embodiments, viewed from the rear;

[0034] Figure 3 A schematic diagram of the internal structure of a rotary dehumidifier according to some embodiments is shown;

[0035] Figure 4 shows a schematic diagram of air flow according to some embodiments;

[0036] Figure 5 A schematic diagram showing the structure of the connection between the first rotor and the second rotor in the rotary dehumidifier according to some embodiments Figure 1 ;

[0037] Figure 6 A schematic diagram showing the structure of the connection between the first rotor and the second rotor in the rotary dehumidifier according to some embodiments Figure 2 ;

[0038] Figure 7 Shows Figure 6 A schematic diagram of the structure of the return air inlet duct that hides part of it;

[0039] Figure 8 A schematic structural diagram of a first rotary wheel in a rotary dehumidifier according to some embodiments is shown;

[0040] Fig. 9 A schematic structural diagram of a second rotary wheel in a rotary dehumidifier according to some embodiments is shown;

[0041] Fig.10 A flow chart of a control method for a rotary dehumidifier according to some embodiments is shown;

[0042] Description of reference numerals:

[0043] 100-housing; 110-fresh air outlet; 120-air supply outlet; 130-regeneration air exhaust outlet; 140-indoor return air outlet;

[0044] 1-first rotor; 101-first rotor moisture absorption zone; 102-first rotor regeneration zone;

[0045] 2-second rotor; 201-second rotor moisture absorption zone; 202-second rotor regeneration zone; 203-second rotor return air zone;

[0046] 3-first stage filter device; 4-first stage surface cooler; 5-main fan; 6-second stage surface cooler; 7-third stage surface cooler; 8-final stage filter device; 9-regeneration fan;

[0047] 10- first rotor regeneration heating device;

[0048] 12-first heat recovery device; 13-second heat recovery device; 14-third heat recovery device;

[0049] 15-return air inlet duct; 16-regeneration air duct;

[0050] 17-Heat recovery control assembly. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0052] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0053] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0054] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0055] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0056] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0057] like Figure 1-Figure 9 As shown, some embodiments of the present application provide a rotary dehumidifier.

[0058] The rotary dehumidifier includes a housing 100 , a first rotary wheel 1 and a second rotary wheel 2 disposed in the housing 100 .

[0059] The housing 100 is provided with a fresh air inlet 110 for admitting fresh outdoor air, an air supply outlet 120 for supplying air to the room, and a regenerated air exhaust outlet 130 for exhausting regenerated air.

[0060] The fresh air inlet 110 and the air supply outlet 120 are connected via a dehumidification air duct in the housing 100 .

[0061] The regeneration air outlet 130 is communicated with the regeneration air duct in the housing 100 .

[0062] The first rotor 1 is disposed in a housing 100 , and can be divided into a first rotor moisture absorption zone 101 and a first rotor regeneration zone 102 according to the air circulation area.

[0063] The first rotor 1 removes moisture from the air by physical adsorption. In this process, the first rotor 1 absorbs moisture in the first rotor moisture absorption zone 101, and then decomposes and absorbs the adsorbed moisture in the first rotor regeneration zone 102 by hot air, so that the first rotor 1 recovers its adsorption capacity and continues the next round of dehumidification operation.

[0064] The second rotor 2 is disposed in the housing 100 , and can be divided into a second rotor moisture absorption zone 201 and a second rotor regeneration zone 202 according to the air circulation area.

[0065] The second rotor 2 removes moisture from the air by physical adsorption. In this process, the second rotor 2 absorbs moisture in the second rotor moisture absorption zone 201, and then desorbs the adsorbed moisture by hot air in the second rotor regeneration zone 202, so that the second rotor 2 recovers its adsorption capacity and continues the next round of dehumidification operation.

[0066] The primary surface cooler 4, the first rotor moisture absorption zone 101, and the second rotor moisture absorption zone 201 are sequentially arranged in the dehumidification air duct along the direction of fresh air flow.

[0067] A main fan 5 is also provided in the dehumidification air duct, and the main fan 5 is used to provide operating power for the whole machine.

[0068] The second rotor regeneration heating device, the second rotor regeneration zone 202 and the first rotor regeneration zone 102 are sequentially arranged in the regeneration air duct along the regeneration air flow direction.

[0069] The second rotor regeneration heating device is used to heat the air entering the second rotor regeneration zone 202.

[0070] A regeneration fan 9 is also provided in the regeneration air duct, and the regeneration fan 9 is used to drive the air flow in the regeneration air duct.

[0071] Dehumidification duct air circulation process: Figure 4 As shown in the direction of the solid arrow, outdoor fresh air enters the dehumidification air duct through the fresh air outlet 110, is cooled and dehumidified by the primary surface cooler 4, is dehumidified by the first rotor moisture absorption zone 101, passes through the main fan 5, and then passes through the second rotor moisture absorption zone 201 for dehumidification, and is finally delivered from the air outlet 120.

[0072] Regeneration duct air flow process: Figure 4As shown in the direction of the dotted arrow, the air reaches the second wheel 2. After part of the air is heated by the regeneration heater device, it passes through the second wheel regeneration zone 202 to remove the moisture adsorbed by the second wheel 2, so that the second wheel 2 can continue to have the ability to adsorb moisture; then it passes through the first wheel regeneration zone 102 to remove the moisture adsorbed by the first wheel 1, so that the first wheel 1 has the ability to continue to adsorb moisture, and finally passes through the regeneration fan 9 to discharge the air from the regeneration air exhaust port 130.

[0073] Because of the air circulation at the regeneration air outlet 130, the moisture adsorbed by the second impeller 2 and the first impeller 1 is taken away, so that the moisture is always in an unsaturated state and can continue to adsorb moisture. The waste heat gas that the second impeller 2 originally needs to discharge can be used to regenerate the first impeller 1, saving energy.

[0074] Referring to the figure, the rotary dehumidifier further includes a first heat recovery device 12 and a second heat recovery device 13 .

[0075] The first heat recovery device 12 is disposed in the regeneration air duct, and is used to recover the exhaust heat discharged through the first rotor regeneration zone 102 .

[0076] The second heat recovery device 13 is arranged in the regeneration air duct and is located at the air inlet side of the second rotor regeneration zone 202 .

[0077] The second heat recovery device 13 is connected to the first heat recovery device 12 . The second heat recovery device 13 is heated by the first heat recovery device 12 and is used to heat the air entering the second rotor regeneration zone 202 .

[0078] The first heat recovery device 12 may be a tubular, plate, or heat pipe heat exchanger, etc.; the second heat recovery device 13 may be a tubular, plate, or heat pipe heat exchanger, etc.

[0079] The first heat recovery device 12 can recover the heat of the regeneration air exhausted from the unit, and transfer the recovered heat to the second heat recovery device 13, which can assist in heating the air entering the second wheel regeneration zone 202, thereby reducing the power of the second wheel regeneration heating device and reducing energy consumption.

[0080] The above-mentioned rotary dehumidifier adopts double-rotor dehumidification, which not only has high dehumidification efficiency, but also utilizes the waste heat gas that originally needs to be discharged from the second wheel 2 to regenerate the first wheel 1, thereby saving energy; at the same time, by recovering the heat of the regenerated air exhaust, not only can the high-temperature exhaust gas be prevented from being directly discharged into the surrounding environment, but the recovered heat can also be used to assist in heating the air entering the second wheel regeneration zone 202, further reducing energy consumption and reducing the operating cost of the entire machine.

[0081] In some embodiments of the present application, the rotary dehumidifier also includes a third heat recovery device 14 .

[0082] The third heat recovery device 14 is arranged in the dehumidification air duct, and is located at the air inlet side of the first wheel moisture absorption zone 101 .

[0083] The third heat recovery device 14 is connected to the first heat recovery device 12 and is supplied with heat by the first heat recovery device 12 for heating the air entering the first rotor moisture absorption zone 101 .

[0084] The third heat recovery device 14 can be a tube type, plate type, heat pipe type heat exchanger or the like.

[0085] Since the most suitable moisture absorption temperature of the wheel is 5~12℃, the fresh air entering the unit needs to be cooled in summer and heated in winter.

[0086] When fresh air enters the unit in summer, the primary surface cooler 4 can cool the fresh air.

[0087] When fresh air enters the unit in winter, the third heat recovery device 14 can heat the fresh air to a suitable moisture absorption temperature before it enters the first rotor moisture absorption zone 101 for dehumidification, thereby improving the dehumidification effect of the rotor.

[0088] In some embodiments of the present application, the rotary dehumidifier further includes a first rotary wheel regeneration heating device 10 .

[0089] The first rotor regeneration heating device 10 is used to heat the air entering the first rotor regeneration zone 102 .

[0090] In some embodiments of the present application, see Fig. 9 The second impeller 2 also includes a second impeller return air zone 203 .

[0091] The air inlet side of the second rotor return air zone 203 is connected to the dehumidification air duct, and a return air inlet duct 15 is connected between the air outlet side of the second rotor return air zone 203 and the air inlet side of the second rotor regeneration zone 202 .

[0092] The second heat recovery device 13 and the second rotor regeneration heating device (not shown) are arranged in the return air inlet duct 15 .

[0093] The outlet side of the regenerated air of the second rotor 2 is connected to the inlet side of the regeneration zone 102 of the first rotor through the regeneration air duct 16 .

[0094] In some embodiments of the present application, an indoor return air outlet 140 is provided on the shell 100, and the indoor return air outlet 140 is connected to the dehumidification air duct. The indoor air entering through the indoor return air outlet 140 enters between the first wheel moisture absorption zone 101 and the second wheel moisture absorption zone 201.

[0095] The indoor return air port 140 is disposed at the air outlet side of the first rotor moisture absorption zone 101 .

[0096] The treated air dehumidified by the first rotor moisture absorption zone 101 is mixed with the indoor air from the indoor return air outlet 140, passes through the main fan 5, and then enters the second rotor 2 for dehumidification.

[0097] The fresh air is mixed with the indoor return air in a certain proportion, which can be precisely controlled by the air valve to ensure the indoor air quality and energy saving effect.

[0098] In some embodiments of the present application, the rotary dehumidifier further includes a primary filter device 3 disposed in the dehumidification air duct.

[0099] The primary filter device 3 is disposed at the rear side of the fresh air inlet 110 , and the primary surface cooler 4 is disposed at the air outlet side of the primary filter device 3 .

[0100] The primary filter device 3 filters the fresh air to remove dust in the air. The primary filter device 3 can be a plate filter.

[0101] In some embodiments of the present application, the rotary dehumidifier further includes a secondary surface cooler 6 .

[0102] The secondary surface cooler 6 is arranged in the dehumidification air duct, and is located at the air inlet side of the moisture absorption zone of the second rotor. The secondary surface cooler 6 can cool the treated air after passing through the first rotor 1.

[0103] In some embodiments of the present application, the rotary dehumidifier also includes a three-stage surface cooler 7.

[0104] The three-stage surface cooler 7 is arranged in the dehumidification air duct, and is located at the air outlet side of the moisture absorption zone of the second rotor. The three-stage surface cooler 7 can cool down the treated air after passing through the second rotor 2.

[0105] In some embodiments of the present application, the rotary dehumidifier also includes a final stage filtering device 8.

[0106] The final treatment device is arranged at the air outlet side of the three-stage surface cooler 7, close to the air supply port 120, and is used to filter the treated air and effectively filter the dust and particulate matter in the treated air.

[0107] In some embodiments of the present application, the dehumidifier adopts a shell 100 structure with upper and lower layers to make the unit structure compact and reduce the occupied area.

[0108] The housing 100 includes an upper housing and a lower housing.

[0109] The fresh air inlet 110 , the regenerated air outlet 130 , and the indoor return air inlet 140 are arranged on the upper shell.

[0110] The upper shell 100 is provided with a regeneration air exhaust shell 100 , the regeneration air exhaust port 130 is opened on the regeneration air exhaust shell, and the first heat recovery device 12 is provided in the regeneration air exhaust shell.

[0111] The primary filter device 3, the primary surface cooler 4, the first rotor 1, and the main fan 5 are sequentially arranged in the upper shell.

[0112] The air supply port 120 is disposed on the lower shell body and is located at the lower side of the fresh air supply port 120 .

[0113] The secondary surface cooler 6, the second rotor 2, the tertiary surface cooler 7, and the final filter device 8 are arranged in the lower shell.

[0114] The housing 100 is provided with inspection doors corresponding to each functional section to facilitate inspection operations.

[0115] A heat recovery control assembly 17 is also provided on the shell 100 , and the heat recovery control assembly 17 is connected to the first heat recovery device 12 , the second heat recovery device 13 and the third heat recovery device 14 , and is used to control the first heat recovery device 12 , the second heat recovery device 13 and the third heat recovery device 14 .

[0116] In this application, the temperature and humidity calculation of the rotary dehumidifier is as follows:

[0117] (1) The fresh air is cooled by the primary surface cooler 4, and the temperature drops by a1 and the humidity drops by b1;

[0118] (2) The treated air passes through the first rotor moisture absorption zone 101, and the rotor undergoes heat exchange, the temperature rises by a2, the moisture is adsorbed, and the humidity drops by b2;

[0119] (3) The treated air is mixed with the indoor air from the indoor return air outlet 140, the temperature rises / drops by a3, and the humidity drops by b3;

[0120] (4) The treated air is cooled by the secondary surface cooler 6, and the temperature drops by a4 and the humidity drops by b4;

[0121] (5) The treated air passes through the second rotor moisture absorption zone 201, and the rotor undergoes heat exchange, the temperature rises by a5, the moisture is adsorbed, and the humidity drops by b5;

[0122] (6) The treated air is cooled by the three-stage surface cooler 7, and the temperature drops by a6 and the humidity drops by b6;

[0123] (7) The processed air is sent out from the air supply port 120, and the air temperature at the air supply port 120 is t4=t3-a6=A-a1+a2±a3-a4+a5-a6, and the humidity is RH4=RH3-b6=B-b1-b2-b3-b4-b5-b6.

[0124] In some other embodiments of the present application, the rotary dehumidifier includes a housing 100 , a first rotary wheel 1 and a second rotary wheel 2 disposed in the housing 100 , a first heat recovery device 12 and a third heat recovery device 14 .

[0125] The housing 100 is provided with a fresh air inlet 110 for admitting fresh outdoor air, an air supply outlet 120 for supplying air to the room, and a regenerated air exhaust outlet 130 for exhausting regenerated air.

[0126] The fresh air inlet 110 and the air supply outlet 120 are connected via a dehumidification air duct in the housing 100 .

[0127] The regeneration air outlet 130 is communicated with the regeneration air duct in the housing 100 .

[0128] The first rotor 1 is disposed in a housing 100 , and can be divided into a first rotor moisture absorption zone 101 and a first rotor regeneration zone 102 according to the air circulation area.

[0129] The first rotating wheel 1 and the second rotating wheel 2 remove moisture from the air through physical adsorption.

[0130] In this process, the first wheel 1 absorbs moisture in the first wheel moisture absorption zone 101, and then decomposes and absorbs the adsorbed water through hot air in the first wheel regeneration zone 102, so that the first wheel 1 recovers its adsorption capacity and continues the next round of dehumidification operation.

[0131] The second wheel 2 will absorb moisture in the second wheel moisture absorption zone 201, and then decompose and absorb the adsorbed water through hot air in the second wheel regeneration zone 202, so that the second wheel 2 can restore its adsorption capacity and continue the next round of dehumidification operation.

[0132] The primary surface cooler 4, the first rotor moisture absorption zone 101, and the second rotor moisture absorption zone 201 are sequentially arranged in the dehumidification air duct along the direction of fresh air flow.

[0133] A main fan 5 is also provided in the dehumidification air duct, and the main fan 5 is used to provide operating power for the whole machine.

[0134] The regeneration heating device, the second rotor regeneration zone 202 and the first rotor regeneration zone 102 are sequentially arranged in the regeneration air duct along the flow direction of the regeneration air.

[0135] The regeneration heating device is used to heat the air entering the second wheel regeneration zone 202.

[0136] A regeneration fan 9 is also provided in the regeneration air duct, and the regeneration fan 9 is used to drive the air flow in the regeneration air duct.

[0137] Air circulation process of the dehumidification duct: outdoor fresh air enters the dehumidification duct through the fresh air outlet 110, is cooled and dehumidified by the primary surface cooler 4, then passes through the first rotor moisture absorption zone 101 for dehumidification, passes through the main fan 5, and then passes through the second rotor moisture absorption zone 201 for dehumidification, and is finally delivered from the air outlet 120.

[0138] Air circulation process of the regeneration duct: when the air reaches the second impeller 2, part of the air is heated by the regeneration heater device, and then passes through the second impeller regeneration zone 202 to take away the moisture adsorbed by the second impeller 2, so that the second impeller 2 can continue to have the ability to adsorb moisture; then passes through the first impeller regeneration zone 102 to take away the moisture adsorbed by the first impeller 1, so that the first impeller 1 has the ability to continue to adsorb moisture, and finally passes through the regeneration fan 9 and is discharged from the regeneration air outlet 130.

[0139] The rotary dehumidifier further includes a first heat recovery device 12 and a third heat recovery device 14 .

[0140] The first heat recovery device 12 is disposed in the regeneration air duct, and is used to recover the exhaust heat discharged through the first rotor regeneration zone 102 .

[0141] The third heat recovery is arranged in the dehumidification air duct, and is located at the air inlet side of the first wheel moisture absorption zone 101 .

[0142] The third heat recovery device 14 is connected to the first heat recovery device 12 and is supplied with heat by the first heat recovery device 12 for heating the air entering the first rotor moisture absorption zone 101 .

[0143] The first heat recovery device 12 may be a tube type, plate type, heat pipe type heat exchanger, etc. The third heat recovery device 14 may be a tube type, plate type, heat pipe type heat exchanger, etc.

[0144] Since the most suitable moisture absorption temperature of the wheel is 5~12℃, the fresh air entering the unit needs to be cooled in summer and heated in winter.

[0145] When fresh air enters the unit in summer, the primary surface cooler 4 can cool the fresh air.

[0146] When fresh air enters the unit in winter, the third heat recovery device 14 can heat the fresh air to a suitable moisture absorption temperature before it enters the first rotor moisture absorption zone 101 for dehumidification, thereby improving the dehumidification effect of the rotor.

[0147] like Fig.10 As shown, the control method of the rotary dehumidifier specifically includes:

[0148] S1, detect outdoor fresh air temperature t;

[0149] S2. Determine whether the outdoor fresh air temperature t is greater than the preset temperature T;

[0150] S31, when the temperature is greater than the preset temperature T, the primary surface cooler 4 works, and the third heat recovery device 14 does not work;

[0151] S32: When the temperature is lower than the preset temperature T, the primary condenser 4 does not work, and the first heat recovery device 12 and the third heat recovery device 14 work.

[0152] The preset temperature T may be less than 3°C. The preset temperature T may be less than 5°C. The preset temperature T may be less than 7°C.

[0153] In some embodiments of the present application, the preset temperature T=5°C.

[0154] When the fresh air temperature t is greater than 5°C, the primary surface cooler 4 works to dehumidify the fresh air and cool it down at the same time.

[0155] When the fresh air temperature t is less than 5°C, the primary surface cooler 4 does not work, and the third heat recovery device 14 works. The third heat recovery device 14 heats the fresh air to a suitable moisture absorption temperature, and then enters the first rotor moisture absorption area 101 for dehumidification, thereby improving the rotor dehumidification effect.

[0156] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

[0157] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A rotary dehumidifier, comprising: A housing is provided with a fresh air inlet, an air supply inlet, and a regeneration air exhaust outlet; the fresh air inlet and the air supply inlet are connected through a dehumidification air duct; the regeneration air exhaust outlet is connected to the regeneration air duct; A first rotor, comprising a first rotor moisture absorption zone and a first rotor regeneration zone; A second rotor, comprising a second rotor moisture absorption zone and a second rotor regeneration zone; The primary surface cooler, the first rotary wheel moisture absorption zone, and the second rotary wheel moisture absorption zone are sequentially arranged in the dehumidification air duct along the direction of fresh air flow; The second rotor regeneration heating device, the second rotor regeneration zone, and the first rotor regeneration zone are sequentially arranged in the regeneration air duct along the regeneration air flow direction; It is characterized by further comprising: A first heat recovery device, disposed in the regeneration air duct, for recovering the exhaust heat discharged through the first rotor regeneration zone; The second heat recovery device is arranged in the regeneration air duct and is located on the air inlet side of the second wheel regeneration zone; the second heat recovery device is connected to the first heat recovery device and is supplied with heat by the first heat recovery device for heating the air entering the second wheel regeneration zone.

2. The rotary dehumidifier according to claim 1, characterized in that: It also includes a third heat recovery device, which is arranged in the dehumidification air duct and located on the air inlet side of the first wheel moisture absorption zone; the second heat recovery device is connected to the first heat recovery device and is heated by the first heat recovery device for heating the air entering the first wheel moisture absorption zone.

3. The rotary dehumidifier according to claim 1, characterized in that: It also includes a first rotor regeneration heating device, which is used to heat the air entering the first rotor regeneration zone.

4. The rotary dehumidifier according to claim 1, characterized in that: The second wheel also includes a second wheel return air zone, the air inlet side of the second wheel return air zone is connected to the dehumidification air duct, a return air inlet duct is connected between the air outlet side of the second wheel return air zone and the air inlet side of the second wheel regeneration zone, the second heat recovery device is arranged in the return air inlet duct, and the air outlet side of the second wheel regeneration air is connected to the air inlet side of the first wheel regeneration zone through the regeneration air duct.

5. The rotary dehumidifier according to claim 1, characterized in that: The shell is provided with an indoor return air port, which is communicated with the dehumidification air duct, and the indoor air entering through the indoor return air port enters between the first rotor moisture absorption zone and the second rotor moisture absorption zone.

6. The rotary dehumidifier according to claim 1, characterized in that: It also includes a primary filter device arranged in the dehumidification air duct, the primary filter device is arranged on the rear side of the fresh air outlet, and the primary surface cooler is arranged on the air outlet side of the primary filter device.

7. The rotary dehumidifier according to claim 6, characterized in that: It also includes a secondary surface cooler, which is arranged in the dehumidification air duct and located on the air inlet side of the second rotor moisture absorption zone.

8. The rotary dehumidifier according to claim 7, characterized in that: It also includes a three-stage surface cooler, which is arranged in the dehumidification air duct and located on the air outlet side of the second rotor moisture absorption zone.

9. The rotary dehumidifier according to claim 1, characterized in that: The housing comprises: An upper shell, the fresh air inlet and the regeneration air outlet are arranged on the upper shell, and the first-stage surface cooler and the first rotor are arranged in the upper shell; The lower shell is arranged on the lower side of the upper shell, the air supply port is arranged on the lower shell, and the second impeller is arranged in the lower shell.

10. The rotary dehumidifier according to claim 2, characterized in that: It also includes a heat recovery control assembly, which is connected to the first heat recovery device, the second heat recovery device and the third heat recovery device and is used to control the first heat recovery device, the second heat recovery device and the third heat recovery device.

Images