Multi-rotating-wheel ultralow dew point dehumidifier and multi-rotating-wheel ultralow dew point dehumidification system

Abstract

The utility model provides a multi-runner ultra-low dew point dehumidifier and a multi-runner ultra-low dew point dehumidification system, which are applied to the technical field of ultra-low dew point dehumidification, the multi-runner ultra-low dew point dehumidifier comprises a first dehumidification runner assembly and a second dehumidification runner assembly; the second dehumidification rotating wheel assembly comprises a second adsorption area, a second cooling area, a second dehumidification rotating wheel assembly regeneration heater and a second regeneration area; ultralow dew-point air subjected to multi-stage dehumidification is mixed with air at an outlet of the second cooling area, only part of air originally entering a regeneration heater of the second dehumidification rotating wheel assembly comes from the second cooling area, the air volume of the air passing through the second cooling area is reduced, and therefore the absolute humidity of the air passing through the regeneration heater is reduced; compared with the prior art, the energy consumption of the multi-rotating-wheel ultralow-dew-point dehumidifier is reduced, and the situation that moisture in air is adsorbed due to overcooling of the second cooling area can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of ultra-low dew point dehumidification, in particular to a multi-rotor ultra-low dew point dehumidifier and a multi-rotor ultra-low dew point dehumidification system using the multi-rotor ultra-low dew point dehumidifier. Background Art

[0002] Ultra-low dew point dehumidification has always been one of the indispensable conditions for many manufacturing industries to improve product quality. For example, in the assembly production process of all-solid-state lithium batteries, ultra-low dew point air greatly affects the coating effect of coating equipment, thereby affecting product quality.

[0003] Currently, to achieve ultra-low dew point (<-90°C DP) dehumidification conditions, dehumidifiers with two-stage or multi-stage adsorption dehumidification rotors are used. These multi-stage dehumidification rotors remove water vapor from the fresh air. However, excessive air passing through the dehumidification rotor cooling zone can lead to moisture adsorption in the cooling zone due to overcooling. Furthermore, since the air passing through the cooling zone must pass through a regeneration heater before entering the regeneration zone, the dehumidifier's energy consumption also increases, increasing the cost of the dehumidification system. Given this, how to use a multi-rotor ultra-low dew point dehumidification system to provide dry air with a dew point temperature <-90°C DP while reducing dehumidifier costs and the energy consumption required for dehumidifier regeneration is an urgent technical issue in the industry.

[0004] Based on this, a multi-rotor ultra-low dew point dehumidifier and a multi-rotor ultra-low dew point dehumidification system are needed. By mixing a portion of the ultra-low dew point air after multi-stage dehumidification with the air passing through the cooling zone and then entering the regeneration heater, dry air with a dew point temperature of less than -90℃ DP is provided and energy consumption is reduced to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a multi-rotor ultra-low dew point dehumidifier and a multi-rotor ultra-low dew point dehumidification system. The purpose of the utility model is achieved by the following technical solutions:

[0006] In a first aspect, the utility model provides a multi-rotor ultra-low dew point dehumidifier, the multi-rotor ultra-low dew point dehumidifier comprising:

[0007] Fresh air inlet;

[0008] Ultra-low dew point air outlet;

[0009] First low dew point air inlet;

[0010] Exhaust outlet;

[0011] a first dehumidification wheel assembly, the first dehumidification wheel assembly comprising at least a first adsorption zone and a first regeneration zone;

[0012] a second dehumidification wheel assembly, the second dehumidification wheel assembly comprising at least a second adsorption zone, a second cooling zone, a second regeneration zone, and a second dehumidification wheel assembly regeneration heater;

[0013] The regeneration heater of the second dehumidification wheel assembly, the second regeneration zone, the first regeneration zone and the exhaust outlet are connected in sequence to form a regeneration exhaust flow path;

[0014] The fresh air inlet, the first adsorption zone, the second adsorption zone, and the ultra-low dew point air outlet are connected in sequence to form a dehumidified gas flow path; the ultra-low dew point air outlet is connected to the air inlet end of the ultra-low dew point air duct; the air inlet end of the second cooling zone is connected to the pipeline between the first adsorption zone and the second adsorption zone in the dehumidified gas flow path; the first low dew point air inlet is connected to the pipeline between the first adsorption zone and the second adsorption zone in the dehumidified gas flow path through a first air return pipeline;

[0015] The multi-rotor ultra-low dew point dehumidifier also includes a second air return pipeline, the air inlet end of the second air return pipeline introduces ultra-low dew point air or low dew point air after multi-stage dehumidification, the air outlet end of the second air return pipeline is connected to the air outlet of the second cooling zone, and the mixed low dew point gas is used as a regeneration air source to be connected to the air circuit of the regeneration heater of the second dehumidification rotor assembly.

[0016] Preferably, the first dehumidification wheel assembly also includes a first dehumidification wheel assembly regeneration heater, and the regeneration exhaust air path also includes a first dehumidification wheel assembly regeneration heater, and the first dehumidification wheel assembly regeneration heater is arranged between the first regeneration zone and the second regeneration zone.

[0017] Furthermore, the multi-rotor ultra-low dew point dehumidifier also includes a first surface cooler arranged upstream of the first adsorption zone and a second surface cooler arranged upstream of the second adsorption zone, and the second surface cooler is arranged downstream of the first low dew point air inlet.

[0018] Preferably, the first dehumidification wheel assembly also includes at least one first cooling zone, and the fresh air inlet is connected to the air inlet end air circuits of the first adsorption zone and the first cooling zone respectively; the air outlet end air circuit of the first cooling zone is connected to the pipeline between the first regeneration zone and the second regeneration zone in the regeneration exhaust flow path.

[0019] Furthermore, the multi-rotor ultra-low dew point dehumidifier includes a first module and a second module that are detachably connected, wherein the first module includes the first dehumidification wheel assembly, a fresh air inlet, an exhaust outlet and a gas pipeline therebetween; the second module includes the second dehumidification wheel, an ultra-low dew point air outlet, a second air return pipeline and a gas pipeline therebetween; the first low dew point air inlet is arranged in the first module or the second module.

[0020] Preferably, the detachable connection includes a clamping connection, a locking connection, and an air duct connection.

[0021] Furthermore, the air inlet end of the second air return pipeline is connected to the dehumidified gas flow path or the ultra-low dew point air duct downstream of the second adsorption zone outlet, thereby introducing ultra-low dew point air after multi-stage dehumidification.

[0022] Furthermore, the air inlet end of the second air return pipeline is connected to the first air return pipeline, thereby introducing low dew point air that has undergone multi-stage dehumidification.

[0023] Furthermore, it also includes a second low dew point air inlet, the air inlet end of the second air return pipe is connected to the second low dew point air inlet, and the second low dew point air inlet is connected to the external drying room air circuit, thereby introducing low dew point air after multi-stage dehumidification.

[0024] Preferably, it also includes a second low dew point air inlet and a low dew point air duct, the air inlet end of the second air return pipe is connected to the second low dew point air inlet, and the air outlet end of the low dew point air duct is connected to the first low dew point air inlet; the second low dew point air inlet is connected to the air path of the low dew point air duct, so as to introduce low dew point air after multi-stage dehumidification.

[0025] In a second aspect, the utility model provides a multi-rotor ultra-low dew point dehumidification system, comprising the above-mentioned multi-rotor ultra-low dew point dehumidifier and a drying room; the drying room comprises a first low dew point return air port and an ultra-low dew point air inlet for the drying room; the ultra-low dew point air inlet for the drying room is connected to the air path of the air outlet end of the ultra-low dew point air duct, and the first low dew point return air port is connected to the air path of the air inlet end of the low dew point air duct.

[0026] In a third aspect, the present invention provides a multi-rotor ultra-low dew point dehumidification system, comprising the above-mentioned multi-rotor ultra-low dew point dehumidifier and a drying room; the drying room comprises a first low dew point return air outlet, a second low dew point return air outlet and an ultra-low dew point air inlet for the drying room; the ultra-low dew point air inlet for the drying room is connected to the air path of the outlet end of the ultra-low dew point air duct, the first low dew point return air outlet is connected to the air path of the inlet end of the low dew point air duct; the second low dew point return air outlet is connected to the air path of the second low dew point air inlet.

[0027] Furthermore, the drying room also includes an ultra-low dew point working space, which is connected to the ultra-low dew point air inlet of the drying room to introduce at least part of the ultra-low dew point air into the ultra-low dew point working space.

[0028] Preferably, the ultra-low dew point workspace includes a workspace exhaust port, and the workspace exhaust port is connected to the drying room.

[0029] Compared with the prior art, the at least one technical solution adopted in the embodiments of this specification can achieve the following beneficial effects:

[0030] First, the second air return duct of the utility model introduces the ultra-low dew point air that has undergone multi-stage dehumidification into the air outlet of the second cooling zone, so that part of the regeneration air required for the second regeneration zone comes from the air at the outlet of the second cooling zone, and the other part comes from the ultra-low dew point air of the second air return duct; under the condition that the regeneration air passing through the second regeneration zone is the same, the air passing through the second cooling zone is reduced, preventing the moisture in the air from being adsorbed due to overcooling in the second cooling zone.

[0031] Second, the remaining part of the regeneration air required for the second regeneration zone of the utility model is taken from the ultra-low dew point air return air of the drying room, which reduces the absolute humidity of the regeneration air passing through the second regeneration zone. Even if the temperature of the regeneration heater of the second dehumidification wheel assembly is low, dry air with a dew point temperature lower than -90°CDP can be obtained, achieving energy saving effect.

[0032] Third, the utility model adopts a modular detachable connection method, which is convenient for the transportation and assembly of the first dehumidification wheel assembly and the second dehumidification wheel, by assembling the first dehumidification wheel assembly and the second dehumidification wheel and their respective air outlets into a first module and a second module respectively, and then connecting them through flanges or clamping; the modular design enables each component to be installed and disassembled independently, reducing the complexity and time of installation and maintenance; and the dehumidifier's troubleshooting and component replacement can be carried out quickly, reducing maintenance costs; through modular design, the system can be expanded or adjusted as needed; for example, the number and type of dehumidification modules can be flexibly configured according to different dehumidification requirements, thereby improving the adaptability of the system.

[0033] Fourth, the first regenerative heater of the present invention can be set according to actual needs. Setting the first regenerative heater can speed up the operation speed of the dehumidification system and improve the overall dehumidification efficiency of the system. The faster dehumidification capacity can more effectively reduce the air humidity and reach the target humidity level faster. Not setting the first regenerative heater can save the purchase and installation cost of the first heater, reduce the initial investment, and reduce the consumption of electricity or fuel, reduce daily operating costs, and facilitate maintenance: without additional heating equipment, the system structure is simpler, maintenance and operation are easier, and one possible failure point is reduced, reducing the overall failure rate of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 This is a structural diagram of the first embodiment of the multi-rotor ultra-low dew point dehumidifier of the utility model;

[0036] Figure 2 This is a structural diagram of the first embodiment of the multi-rotor ultra-low dew point dehumidification system of the utility model;

[0037] Figure 3 This is a structural diagram of a second embodiment of the multi-rotor ultra-low dew point dehumidifier and system of the present utility model;

[0038] Figure 4 This is a structural diagram of a third embodiment of a multi-rotor ultra-low dew point dehumidifier and system according to the present invention;

[0039] Figure 5 This is a structural diagram of a fourth embodiment of a multi-rotor ultra-low dew point dehumidifier and system according to the present invention;

[0040] Figure 6 This is a structural diagram of a fifth embodiment of the multi-rotor ultra-low dew point dehumidifier and system of the present utility model;

[0041] Figure 7 This is a schematic diagram of the modular structure of the multi-rotor ultra-low dew point dehumidification system of the utility model;

[0042] Figure 8 This is a schematic diagram of the exhaust vents in the working space of the multi-rotor ultra-low dew point dehumidification system of the present utility model.

[0043] Description of Reference Numerals

[0044] 1. Multi-rotor ultra-low dew point dehumidifier; 11. First module; 111. First dehumidification rotor assembly; 1111. First adsorption zone; 1112. First regeneration zone; 112. Exhaust outlet; 113. Fresh air inlet; 114. First surface cooler; 115. First dehumidification rotor assembly regeneration heater; 12. Second module; 121. Second dehumidification rotor; 1211. Second adsorption zone; 1212. Second cooling zone; 1213. Second regeneration zone; 122. First low dew point air inlet; 123. Second Air return duct; 124, ultra-low dew point air outlet; 125, second dehumidification wheel assembly regeneration heater; 126, second surface cooler; 127, afterheater; 128, second low dew point air inlet; 129, first air return duct; 2, drying room; 21, first low dew point return air inlet; 22, drying room ultra-low dew point air inlet; 23, second low dew point return air inlet; 3, ultra-low dew point workspace; 24, ultra-low dew point air duct; 25, low dew point air duct; 31, workspace exhaust vent. DETAILED DESCRIPTION

[0045] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0046] The following describes the implementation of the present invention through specific concrete examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The present invention can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0047] It should be noted that in this application, ultra-low dew-point air refers to dry air with a dew point temperature of less than -90°C DP, primarily referring to dry air at the ultra-low dew-point air outlet. Low dew-point air refers to dry air with a dew point temperature of less than -50°C DP. Since the goal of this application is to produce ultra-low dew-point air with a dew point temperature of less than -90°C DP, the dry air within the drying room in this application does not meet the ultra-low dew-point requirement due to issues such as operator activity and the drying room's sealing. However, the dew point temperature of the dry air within the drying room is still lower than that of general dry air. Therefore, the dry air within the drying room and its return air duct is defined as low dew-point air. Furthermore, the ultra-low dew-point workspace in this application refers to a local space (such as a glove box or a local isolation enclosure) where the dew point temperature of the air within the space is maintained below -80°C DP. In the following description, specific details are provided to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be practiced without these specific details.

[0048] At the same time, in this specification, descriptions involving orientations, such as up, down, left, right, front, back, inside, outside, longitudinal, lateral, vertical, and horizontal, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention 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. Therefore, they cannot be understood as limitations on the present invention.

[0049] Furthermore, in the description of this specification, it should be noted that, unless otherwise expressly 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, an indirect connection through an intermediate medium, or a communication between two elements. The components mentioned in this utility model are connected in sequence, which only represents the relative position relationship between the components and the circulation direction of the corresponding working fluids and gases. Without destroying the relative position and connection sequence of the components, those skilled in the art can set other different intermediate components between the components connected in sequence according to actual needs, such as fans, surface coolers, filters, etc. "Connected in sequence" should not be understood as only that the components must be directly connected in sequence; and the embodiments in this specification use the multi-rotor ultra-low dew point dehumidification system for all-solid-state lithium batteries as an example, which is not the only application scenario of this application; the multi-rotor ultra-low dew point dehumidifier and multi-rotor ultra-low dew point dehumidification system of this application can be applied to any scenario requiring ultra-low dew point air.

[0050] In the prior art, the production of all-solid-state lithium batteries needs to be carried out in a drying room under ultra-low dew point air conditions. A dehumidifier consisting of a multi-stage dehumidification rotor is used to continuously circulate the treated ultra-low dew point air to maintain a stable low humidity environment in the drying room. However, the regenerated air of the dehumidifier in the prior art all comes from the cooling zone of the last stage of the multi-stage rotor, which will cause too much air to pass through the cooling zone of the last stage of the rotor, resulting in overcooling of the cooling zone of the last stage of the rotor, causing moisture in the air in the cooling zone to be adsorbed.

[0051] Figure 1 The figure shows a schematic structural diagram of a multi-rotor ultra-low dew point dehumidifier 1 according to the first embodiment of the present application, wherein the multi-rotor ultra-low dew point dehumidifier 1 comprises: a fresh air inlet 1113, an ultra-low dew point air outlet 124, a first low dew point air inlet 122, an exhaust outlet 1112, a first dehumidification rotor assembly 111, a second dehumidification rotor 121, and a second air return pipe 123; the first dehumidification rotor assembly 111 comprises a first adsorption zone 1111 and a first regeneration zone 1112; the second dehumidification rotor 121 comprises a second adsorption zone 1211, a second cooling zone 1212, a second regeneration zone 1213, and a second dehumidification rotor assembly regeneration heater 125; the second dehumidification rotor assembly regeneration heater 125, the second regeneration zone 1213, the first regeneration zone 1111, and the second regeneration zone 1112. 12 and the exhaust outlet 1112 are connected in sequence to form a first regeneration exhaust flow path; the fresh air inlet 1113, the first adsorption zone 1111, the second adsorption zone 1211, and the ultra-low dew point air outlet 124 are connected in sequence to form a dehumidification gas flow path; the air inlet end of the second cooling zone 1212, the first low dew point air inlet 122 and the pipeline between the first adsorption zone 1111 and the second adsorption zone 1211 in the dehumidification gas flow path are connected in sequence; the air inlet end of the second air return pipeline 123 introduces low dew point air after multi-stage dehumidification, and the air outlet end of the second air return pipeline 123 is connected to the air outlet of the second cooling zone 1212, and the mixed low dew point gas is used as the regeneration gas source and is connected in sequence to the regeneration heater 125 of the second dehumidification wheel assembly.

[0052] In a preferred embodiment, the air inlet end of the second air return line 123 is connected to the dehumidified gas flow path downstream of the air outlet of the second adsorption zone 1211, thereby introducing ultra-low dew point air after multi-stage dehumidification.

[0053] Figure 2The figure shows a structural schematic diagram of a multi-rotor ultra-low dew-point dehumidification system of the first embodiment of the present application, wherein the multi-rotor ultra-low dew-point dehumidification system includes a multi-rotor ultra-low dew-point dehumidifier 1 and a drying room 2; the drying room 2 includes a first low dew-point return air port 21 and a drying room ultra-low dew-point air inlet 22; the ultra-low dew-point air outlet 124 is connected to the drying room 2 through the drying room ultra-low dew-point air inlet 22, and the air in the drying room 2 is connected to the first low dew-point air inlet 122 through the first low dew-point return air port 21.

[0054] In this solution, the gas dehumidified by the secondary rotor is used as the regeneration air, which avoids the need to lead out the pipeline in the drying room, thereby enhancing the sealing effect of the drying room; and the dew point temperature of the air led out from the pipeline between the air outlet end of the second adsorption area 1211 and the ultra-low dew point air outlet 124 is lower, which can further reduce the humidity of the mixed air, thereby reducing the regeneration temperature and achieving energy-saving effect; at the same time, when the regeneration air volume is constant, the structure of the pipeline leading out of the drying room 2 is reduced, so that the sealing of the ultra-low dew point control space 2 is better.

[0055] It should be noted that, in this embodiment, the second low dew point return air vent 23 is not provided in the drying room, and the dry air in the drying room 2 is connected to the first low dew point air inlet 122 and the second low dew point air inlet 128 through the first low dew point return air vent 21.

[0056] Figure 3 The figure shows a schematic structural diagram of a multi-rotor ultra-low dew point dehumidifier 1 and a multi-rotor ultra-low dew point dehumidification system according to the second embodiment of the present application. Compared with the first embodiment, the drying room 2 in this embodiment is further provided with a second low dew point return air inlet 23; the second low dew point return air inlet 23 is connected to the second low dew point air inlet 128; the air inlet end of the second air return pipe 123 is connected to the drying room 2, thereby introducing low dew point air after multi-stage dehumidification.

[0057] In this solution, the remaining part of the regeneration air required for the second regeneration zone 1213 is taken from the low dew point air return air of the drying room 2, which reduces the absolute humidity of the regeneration air passing through the second regeneration zone 1213. Even if the temperature of the second dehumidification wheel assembly regeneration heater 125 is low, dry air with a dew point temperature lower than -90°CDP can be obtained, thereby achieving energy saving effect; under the condition of the same heating temperature of the second dehumidification wheel assembly regeneration heater 125, the lower the absolute humidity of the air, the lower its relative humidity. The lower the relative humidity of the regeneration air, the better the regeneration effect of the first dehumidification wheel assembly 111 and the second dehumidification wheel assembly 121 (the more thoroughly the wheels are dried), and the lower the air humidity and dew point temperature of the dry air at the ultra-low dew point air outlet 124.

[0058] Figure 4The figure shows a schematic structural diagram of a multi-rotor ultra-low dew point dehumidifier 1 and a multi-rotor ultra-low dew point dehumidification system according to the third embodiment of the present application. Compared with the first embodiment, the ultra-low dew point air outlet 124 in this embodiment is connected to the air inlet end of the ultra-low dew point air duct 25, and the air inlet end of the second air return pipe 123 is connected to the air inlet end of the ultra-low dew point air duct 25, thereby introducing ultra-low dew point air after multi-stage dehumidification.

[0059] In this solution, the assembly of the pipeline is facilitated by connecting the second air return pipeline 123 to the ultra-low dew point air duct 25 downstream of the ultra-low dew point air outlet 124; during installation, it is only necessary to connect the pipeline outlet duct of the ultra-low dew point air duct 25 to the second air return pipeline 123; compared with installing from the inside of the multi-rotor ultra-low dew point dehumidifier 1 with a complex structure, the connection method in this solution avoids disassembling the multi-rotor ultra-low dew point dehumidifier 1, and the operator will not damage the pipeline inside the multi-rotor ultra-low dew point dehumidifier 1 due to misoperation when connecting the pipeline, and at the same time makes the maintenance of the pipeline more convenient.

[0060] Figure 5 Shown is a structural schematic diagram of a multi-rotor ultra-low dew point dehumidifier 1 and a multi-rotor ultra-low dew point dehumidification system according to the fourth embodiment of the present application. Compared with the first embodiment, in this embodiment, the first low dew point air inlet 122 is connected to the pipeline gas path between the first adsorption zone 1111 and the second adsorption zone 1211 in the dehumidified gas flow path through the first air return pipeline 129, and the air inlet end of the second air return pipeline 123 is connected to the first air return pipeline 129, thereby introducing low dew point air after multi-stage dehumidification.

[0061] In this solution, low dew point air is directly introduced into the multi-rotor ultra-low dew point dehumidifier 1. Compared with other embodiments, the length of the air duct used is the shortest, which saves the length of the air duct and reduces the overall cost of the multi-rotor ultra-low dew point dehumidifier 1.

[0062] Figure 6 The figure shows a structural schematic diagram of a multi-rotor ultra-low dew point dehumidifier 1 and a multi-rotor ultra-low dew point dehumidification system according to the fifth embodiment of the present application. The multi-rotor ultra-low dew point dehumidifier 1 also includes a second low dew point air inlet 128 and a low dew point air duct 25. The air inlet end of the second air return pipe 123 is connected to the second low dew point air inlet 128, and the air outlet end of the low dew point air duct 25 is connected to the first low dew point air inlet 122; the second low dew point air inlet 128 is connected to the low dew point air duct 25 inlet, thereby introducing low dew point air after multi-stage dehumidification.

[0063] In this solution, low dew-point air is introduced from the outside of the drying room 2, which avoids the need to lead out pipes from the drying room 2 compared to the first embodiment, thereby enhancing the sealing effect of the drying room 2; compared with the fifth embodiment, it is easier to install, avoids connecting pipes inside the multi-rotor ultra-low dew-point dehumidifier 1, and there is no need to disassemble the multi-rotor ultra-low dew-point dehumidifier 1 during installation.

[0064] It should be understood that the illustrations of the second, third, fourth and fifth embodiments in the present application specification are all schematic diagrams of the structure of the multi-rotor ultra-low dew-point dehumidifier 1 and the multi-rotor ultra-low dew-point dehumidification system containing it, and do not represent protection of only the corresponding multi-rotor ultra-low dew-point dehumidification system. The multi-rotor ultra-low dew-point dehumidifier 1 corresponding to each embodiment is also included in the protection scope of the claims of this utility model.

[0065] It should be noted that after the second cooling zone 1212 is connected to the second air return pipe 123, it is connected to the second regeneration zone 1213 air circuit at least through the second dehumidification wheel assembly regeneration heater 125. Here, "at least" means that after the second cooling zone 1212 is connected to the second air return pipe 123, the mixed gas must at least pass through the second dehumidification wheel assembly regeneration heater 125. As for whether it passes through other components, such as: fans or air valves and other possible components, and the arrangement order between various components, there is no limitation, nor can it be understood as a limitation on the scope of protection of the claims.

[0066] It should be noted that if Figure 1 As shown, the first dehumidification wheel assembly 111 in the first embodiment of the present application is not provided with the first dehumidification wheel assembly regeneration heater 115, thereby making the entire dehumidification system more energy-efficient; the remaining embodiments only provide an auxiliary first dehumidification wheel assembly regeneration heater 115 when starting up in order to shorten the time to reach the required air supply dew point; it should be understood that this application describes the first embodiment as an example without providing the first dehumidification wheel assembly regeneration heater 115, but other embodiments may also not provide the first dehumidification wheel assembly regeneration heater 115, and it should not be understood that only the first embodiment does not provide the first dehumidification wheel assembly regeneration heater 115.

[0067] Furthermore, in any of the above embodiments, a post-heater 127 is provided behind the air outlet of the second adsorption zone 1211 to prevent the dry air passing through the air outlet of the second adsorption zone 1211 from being too cold, causing the temperature in the drying room 2 to be too low, thereby affecting the work efficiency and comfort of the operators. Optionally, the multi-rotor ultra-low dew-point dehumidifier 1 further includes a first surface cooler 114 located upstream of the first adsorption zone 1111 and a second surface cooler 116 located upstream of the second adsorption zone 1211, with the second surface cooler 116 located downstream of the first low-dew-point air inlet 122. The air passing through the first adsorption zone 1111 and the second adsorption zone 1211 are pre-cooled by the first surface cooler 114 and the second surface cooler 116, respectively, to reduce the air temperature and thereby improve the dehumidification effect of the first adsorption zone 1111 and the second adsorption zone 1211.

[0068] It should be noted that in the second embodiment, when the air outlet of the second adsorption zone 1211 is connected to the after-heater 127, the air inlet end of the second air return pipe 123 is connected to the downstream of the after-heater 127; but it should be understood that the connection of the air inlet end of the second air return pipe 123 to the downstream of the after-heater 127 is only a conventional industrial design. In theory, the air inlet end of the second air return pipe 123 can be connected to any position between the second adsorption zone 1211 and the ultra-low dew point air outlet 124. The connection position of the air inlet end of the second air return pipe 123 in this case should not be understood as a limitation on the scope of protection of the independent claim of the present utility model.

[0069] In a preferred embodiment, the first dehumidification wheel assembly 111 also includes a first cooling zone (not shown in the figure), and the fresh air inlet 1113 is respectively connected to the air inlet end of the first adsorption zone 1111 and the first cooling zone; the second regeneration exhaust flow path of the first cooling zone outlet is connected to the first regeneration exhaust flow path, and the connection end of the second regeneration exhaust flow path and the first regeneration exhaust flow path is located between the second regeneration zone 1213 and the second dehumidification wheel assembly regeneration heater 125; lowering the temperature of the wheel by the first cooling zone can further reduce the humidity of the air, so that the dehumidification wheel can more effectively adsorb moisture, thereby improving the overall dehumidification effect.

[0070] In a preferred embodiment, Figure 7As shown, in the multi-rotor ultra-low dew point dehumidifier 1 of the first embodiment, the first dehumidification rotor assembly 111, the fresh air inlet 1113, the first dehumidification rotor assembly regeneration heater 115 and the exhaust outlet 1112 constitute the first module 11, the second dehumidification rotor 121, the ultra-low dew point air outlet 124 and the second regeneration heater constitute the second module 12, and the first module 11 and the second module 12 are detachably connected; in a preferred embodiment, the first module 11 and the second module 12 are connected by a flange or clamping connection, a lock connection, an air duct connection, etc.; however, it should be understood that the above modular connection method can be set in any of the above embodiments, and is not limited to the multi-rotor ultra-low dew point dehumidifier 1 in the first embodiment. Figure 7 Only the first embodiment is taken as an example, and the other embodiments refer to Figure 7 The modular connection method can be used.

[0071] In this solution, a modular detachable connection method is used to facilitate the transportation and assembly of the first dehumidification wheel assembly 111 and the second dehumidification wheel 121. The first dehumidification wheel assembly 111 and the second dehumidification wheel 121 and their respective air outlets are respectively assembled into a first module 11 and a second module 12, and then connected through flanges or clamping. The modular design enables each component to be installed and disassembled independently, reducing the complexity and time of installation and maintenance. The troubleshooting and component replacement of the multi-wheel ultra-low dew point dehumidifier 1 can be carried out quickly, reducing maintenance costs. Through modular design, the system can be expanded or adjusted as needed. For example, the number and type of dehumidification modules can be flexibly configured according to different dehumidification requirements, thereby improving the adaptability of the system.

[0072] In a preferred embodiment, Figure 4 and Figure 8 As shown, in the multi-rotor ultra-low dew-point dehumidification system, the ultra-low dew-point air passing through the ultra-low dew-point air inlet 22 in the drying room 2 can be partially or completely introduced into the ultra-low dew-point working space 3; the ultra-low dew-point working space 3 is also provided with an ultra-low dew-point air exhaust 31, and the exhaust of the ultra-low dew-point working space 3 is manually controlled by an air valve, thereby maintaining the low dew-point air environment in the drying room 2; however, it should be understood that this specification of the application only uses the multi-rotor ultra-low dew-point dehumidification system of the second and third embodiments as examples to illustrate the arrangement of the ultra-low dew-point air exhaust 31, but other embodiments can refer to this structure to allow the ultra-low dew-point air passing through the ultra-low dew-point air inlet 22 in the drying room 2 in the multi-rotor ultra-low dew-point dehumidification system to be partially or completely introduced into the ultra-low dew-point working space 3, and then indirectly introduced into the drying room 2 through the ultra-low dew-point air exhaust 31 provided on the ultra-low dew-point working space 3.

[0073] In this solution, the ultra-low dew point air generated by the multi-rotor ultra-low dew point dehumidifier 1 is directly introduced into the ultra-low dew point working space 3 instead of being introduced into the drying room 2, further reducing the dew point of the air in the ultra-low dew point working space 3, so that it can enhance production efficiency when used in production, such as enhancing the coating effect of the coating equipment, thereby improving the quality of the product.

[0074] See again Figure 5 In a possible implementation environment, for example, the multi-rotor ultra-low dew point dehumidification system of the fourth embodiment is applied to the all-solid-state lithium battery production process, the drying room 2 includes a second low dew point return air port 23, and the air inlet end of the second air return pipe 123 of the multi-rotor ultra-low dew point dehumidifier 1 is connected to the second low dew point return air port 23; an ultra-low dew point working space 3 is provided in the drying room 2, and in this embodiment, the ultra-low dew point working space 3 is a glove box; since the all-solid-state lithium battery production process requires a low air humidity in the production environment, the multi-rotor ultra-low dew point dehumidification system of the present application is used to introduce ultra-low dew point air into the glove box to reduce the air humidity in the glove box; specifically, the ultra-low dew point dehumidification system can be used at each main node of the multi-rotor ultra-low dew point dehumidification system (see Figure 2 ) Get the environmental data and get the following status table:

[0075] Table 1

[0076] As can be seen from the above table, the dew point temperature of the air introduced from the fresh air inlet 1113 is 25.4°C DP and the absolute humidity is 20.23g / kg (DA); after passing through the first dehumidification rotor assembly 111, the dew point temperature of the air at position ④ drops to -22.5°C DP and the absolute humidity drops to 0.495g / kg (DA); after mixing with the ultra-low dew point air at -55°C DP, the dew point of the air at position ⑤ drops to -37.3°C DP. After being processed by the second dehumidification rotor 121, the dew point temperature of the air drops to -90°C DP Since the absolute humidity of the air at position ⑬ after passing through the second cooling zone 1212 is 0.107 g / kg (DA), and the absolute humidity of the gas at position ⑮ after mixing with the ultra-low dew point air drawn out of the second air outlet of the drying room is 0.060 g / kg (DA), the absolute humidity of the regeneration air is reduced, so that even at a relatively low regeneration temperature, DP dry air with a dew point temperature below -90°C can be obtained, thereby achieving energy saving of the multi-rotor ultra-low dew point dehumidification system; specifically, in one embodiment, the regeneration temperature of this embodiment (position ⑯) is 18 0℃, the heat brought in is relatively small, so the cooling air volume can be reduced. The cooling air volume at position ⑫ and position ⑬ is only 2.007kg (DA) / hr, which is only half of the regeneration air volume (4.014kg (DA) / hr) at position ⑮. At the same time, due to the reduction in cooling air volume, the temperature of the cooling air coming out of the cooling zone will also rise (100℃ DB), while the overall heat recovery capacity will not be reduced too much, and the energy consumption of the regeneration heater of the second dehumidification rotor 121 will be saved. In addition, in this embodiment, most of the ultra-low dew point air (-90 ℃DP) enters the drying room, and only a small part of the used low dew point air (-55℃DP) enters the multi-rotor ultra-low dew point dehumidifier 1 through the first low dew point return air port 21 and the second low dew point return air port 23; it should be understood that in this embodiment, the use of the ultra-low dew point air from the second low dew point return air port 23 as the regeneration air for the second regeneration zone is only preferred, and the ultra-low dew point air from any source can be used as the regeneration air for the second regeneration zone. The use of the ultra-low dew point air from the second low dew point return air port 23 should not be understood as a limitation to the independent claim of the utility model.

[0077] In this specification, the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the embodiments described later, the description is relatively simple, and the relevant parts can be referred to the partial description of the previous embodiments.

[0078] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited to them. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this utility model should be included in the scope of protection of the present utility model. Therefore, the scope of protection of the present utility model should be based on the scope of protection of the claims.

Claims

1. A multi-rotor ultra-low dew point dehumidifier, characterized in that: The multi-rotor ultra-low dew point dehumidifier includes: Fresh air inlet; Ultra-low dew point air outlet; First low dew point air inlet; Exhaust outlet; a first dehumidification wheel assembly, the first dehumidification wheel assembly comprising at least a first adsorption zone and a first regeneration zone; a second dehumidification wheel assembly, the second dehumidification wheel assembly comprising at least a second adsorption zone, a second cooling zone, a second regeneration zone, and a second dehumidification wheel assembly regeneration heater; The regeneration heater of the second dehumidification wheel assembly, the second regeneration zone, the first regeneration zone and the exhaust outlet are connected in sequence to form a regeneration exhaust flow path; The fresh air inlet, the first adsorption zone, the second adsorption zone, and the ultra-low dew point air outlet are connected in sequence to form a dehumidified gas flow path; the ultra-low dew point air outlet is connected to the air inlet end of the ultra-low dew point air duct; the air inlet end of the second cooling zone is connected to the pipeline between the first adsorption zone and the second adsorption zone in the dehumidified gas flow path; the first low dew point air inlet is connected to the pipeline between the first adsorption zone and the second adsorption zone in the dehumidified gas flow path through a first air return pipeline; The multi-rotor ultra-low dew point dehumidifier also includes a second air return pipeline, the air inlet end of the second air return pipeline introduces ultra-low dew point air or low dew point air after multi-stage dehumidification, the air outlet end of the second air return pipeline is connected to the air outlet of the second cooling zone, and the mixed low dew point gas is used as a regeneration air source to be connected to the air circuit of the regeneration heater of the second dehumidification rotor assembly.

2. The multi-rotor ultra-low dew point dehumidifier according to claim 1, characterized in that: The first dehumidification wheel assembly also includes a first dehumidification wheel assembly regeneration heater. The regeneration exhaust air path also includes a first dehumidification wheel assembly regeneration heater. The first dehumidification wheel assembly regeneration heater is arranged between the first regeneration zone and the second regeneration zone.

3. The multi-rotor ultra-low dew point dehumidifier according to claim 1, characterized in that: It also includes a first surface cooler located upstream of the first adsorption zone and a second surface cooler located upstream of the second adsorption zone, and the second surface cooler is located downstream of the first low dew point air inlet.

4. The multi-rotor ultra-low dew point dehumidifier according to claim 1, characterized in that: The first dehumidification wheel assembly also includes at least one first cooling zone, and the fresh air inlet is connected to the air inlet end air circuits of the first adsorption zone and the first cooling zone respectively; the air outlet end air circuit of the first cooling zone is connected to the pipeline between the first regeneration zone and the second regeneration zone in the regeneration exhaust flow path.

5. The multi-rotor ultra-low dew point dehumidifier according to claim 1, characterized in that: The multi-rotor ultra-low dew point dehumidifier includes a first module and a second module that are detachably connected, wherein the first module includes the first dehumidification wheel assembly, a fresh air inlet, an exhaust outlet and the gas pipeline therebetween; the second module includes the second dehumidification wheel, an ultra-low dew point air outlet, a second air return pipeline and the gas pipeline therebetween; the first low dew point air inlet is arranged in the first module or the second module.

6. The multi-rotor ultra-low dew point dehumidifier according to claim 5, characterized in that: The detachable connection includes a clamping connection, a locking connection or an air duct connection.

7. The multi-rotor ultra-low dew point dehumidifier according to any one of claims 1 to 6, characterized in that: The air inlet end of the second air return pipeline is connected to the dehumidified gas flow path or the ultra-low dew point air duct downstream of the second adsorption zone air outlet, thereby introducing ultra-low dew point air that has undergone multi-stage dehumidification.

8. The multi-rotor ultra-low dew point dehumidifier according to any one of claims 1 to 6, characterized in that: The air inlet end of the second air return pipeline is connected to the first air return pipeline, thereby introducing low dew point air that has undergone multi-stage dehumidification.

9. The multi-rotor ultra-low dew point dehumidifier according to any one of claims 1 to 6, characterized in that: It also includes a second low dew point air inlet, the air inlet end of the second air return pipe is connected to the second low dew point air inlet, and the second low dew point air inlet is connected to the external drying room air circuit, so as to introduce low dew point air after multi-stage dehumidification.

10. The multi-rotor ultra-low dew point dehumidifier according to any one of claims 1 to 6, characterized in that: It also includes a second low dew point air inlet and a low dew point air duct, wherein the air inlet end of the second air return pipe is connected to the second low dew point air inlet, and the air outlet end of the low dew point air duct is connected to the first low dew point air inlet; The second low dew point air inlet is connected to the air path of the low dew point air duct, so as to introduce low dew point air that has undergone multi-stage dehumidification.

11. A multi-rotor ultra-low dew point dehumidification system, characterized in that: It comprises a multi-rotor ultra-low dew point dehumidifier and a drying room as described in any one of claims 1-8 and 10; the drying room comprises a first low dew point return air outlet and an ultra-low dew point air inlet for the drying room; the ultra-low dew point air inlet for the drying room is connected to the air path of the air outlet end of the ultra-low dew point air duct, and the first low dew point return air outlet is connected to the air path of the air inlet end of the first air return pipe.

12. A multi-rotor ultra-low dew point dehumidification system, characterized in that: It comprises the multi-rotor ultra-low dew point dehumidifier and a drying room as described in claim 9; the drying room comprises a first low dew point return air outlet, a second low dew point return air outlet and an ultra-low dew point air inlet for the drying room; the ultra-low dew point air inlet for the drying room is connected to the air path of the outlet end of the ultra-low dew point air duct, the first low dew point return air outlet is connected to the air path of the inlet end of the low dew point air duct; the second low dew point return air outlet is connected to the air path of the second low dew point air inlet.

13. The multi-rotor ultra-low dew point dehumidification system according to claim 11 or 12, characterized in that: The drying room also includes an ultra-low dew point working space, which is connected to the ultra-low dew point air inlet of the drying room so as to introduce at least part of the ultra-low dew point air into the ultra-low dew point working space.

14. The multi-rotor ultra-low dew point dehumidification system according to claim 13, characterized in that: The ultra-low dew point workspace includes a workspace exhaust port, and the workspace exhaust port is communicated with the drying room.

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