Dehumidifier

Abstract

The present invention provides a dehumidifier, which is applied to the field of industrial dehumidification technology. The dehumidifier includes: a dehumidification wheel, which is provided with a dehumidification zone and a regeneration zone; a fan assembly, which respectively forms a dehumidification air path passing through the dehumidification zone and a regeneration air path passing through the regeneration zone; a first refrigerator, which is arranged in the dehumidification air path and located on the air inlet side of the dehumidification zone; a second refrigerator, which is arranged in the dehumidification air path and located between the air outlet side of the first refrigerator and the air inlet side of the dehumidification zone; a regeneration heating assembly, which is arranged in the regeneration air path and located on the air inlet side of the regeneration zone, and is used to heat the regeneration air; a heat-conducting device, which connects the second refrigerator and the regeneration heating assembly. Among them, the first refrigerator includes a chilled water group, and the second refrigerator includes a direct expansion refrigeration unit, and the direct expansion refrigeration unit is connected to the heat-conducting device. Such a configuration helps to obtain lower humidity, reduces the risk of unloading shutdown, improves energy utilization, and is more energy-saving and environmentally friendly.

Description

Technical Field

[0001] The invention relates to the technical field of industrial dehumidification, in particular to a dehumidifier. Background Art

[0002] Rotary dehumidifiers are used for dehumidification and temperature control. They are mainly used in some industrial plants to meet the low-humidity production requirements of industrial plants. Generally, a rotary dehumidifier draws outdoor air, cools the air through a refrigerator, and uses a rotary wheel that can efficiently absorb moisture to reduce the humidity of the air to the required range, thereby providing a low-humidity production environment for industrial plants. In the related art, in some industrial plants with strict humidity requirements, it is difficult for a rotary dehumidifier to reduce the humidity to the target value. Even if the humidity can be reduced to the target value, the energy consumption brought by the rotary dehumidifier is too high, which is not energy-saving and environmentally friendly. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a dehumidifier with higher energy efficiency and more energy-saving and environmental protection.

[0004] An embodiment of the present invention provides a dehumidifier, which includes: a dehumidification wheel, provided with a dehumidification zone and a regeneration zone; a fan assembly, which respectively forms a dehumidification air path passing through the dehumidification zone and a regeneration air path passing through the regeneration zone; a first refrigerator, arranged in the dehumidification air path and located on the air inlet side of the dehumidification zone, for cooling and dehumidifying the fresh air to obtain primary cold air; a second refrigerator, arranged in the dehumidification air path and located between the air outlet side of the first refrigerator and the air inlet side of the dehumidification zone, for cooling and dehumidifying the primary cold air to obtain secondary cold air; a regeneration heating assembly, arranged in the regeneration air path and located in the The air inlet side of the regeneration zone is used to heat the regeneration air; a heat-conducting device is connected to the second refrigerator and the regeneration heating component, and the heat-conducting device can transfer the heat generated by the second refrigerator when cooling and dehumidifying the primary cold air to the regeneration heating component, so that the regeneration heating component can use the heat to heat the regeneration air; wherein, the first refrigerator includes a chilled water group, and the chilled water group is used to take away the heat of the fresh air; the second refrigerator includes a direct expansion refrigeration unit, and the direct expansion refrigeration unit is used to take away the heat of the primary cold air, and the direct expansion refrigeration unit is connected to the heat-conducting device.

[0005] The dehumidifier provided by the embodiment of the present invention has at least the following beneficial effects:

[0006] By setting the first refrigerator and the second refrigerator, the first refrigerator and the second refrigerator perform two-stage refrigeration and dehumidification on the fresh air to obtain secondary cold air with low temperature and humidity, and the load of the dehumidification wheel is low, so that the dehumidification wheel can be better dehumidified, which helps to obtain lower humidity. At the same time, a heat conducting device is set to connect the second refrigerator and the regeneration heating component, and the regeneration heating component can use the heat generated by the refrigeration of the second refrigerator to heat the regeneration air, thereby improving energy utilization and being more energy-saving and environmentally friendly. In addition, by setting the first refrigerator as a chilled water group and setting the second refrigerator as a direct expansion refrigeration unit, the chilled water group can stably refrigerate and dehumidify the fresh air to ensure that the first cold air entering the direct expansion refrigeration unit has a stable temperature and humidity, thereby reducing the risk of unloading and shutdown of the second refrigerator. At the same time, the direct expansion refrigeration unit can perform efficient refrigeration and dehumidification to obtain secondary cold air with low humidity and temperature, which is conducive to reducing the load of the dehumidification wheel and improving the dehumidification effect of the dehumidification wheel.

[0007] In an example of this implementation, the direct expansion refrigeration unit includes an evaporation structure and a condensation structure, the evaporation structure is provided with a first circulation channel, the condensation structure is connected to the heat conductive device and is provided with a second circulation channel, the first circulation channel and the second circulation channel are connected, the first circulation channel and the second circulation channel are used for circulation of a cooling medium, so that the cooling medium absorbs heat in the first circulation channel and then flows to the second circulation channel to release heat.

[0008] In an embodiment of this implementation mode, the regenerative heating component and the second refrigerator are arranged on opposite sides of the dehumidification wheel, and the heat conductive device is constructed as a heat conductive pipe, one end of the heat conductive pipe is connected to the condensation structure, and the other end of the heat conductive pipe is connected to the regenerative heating component.

[0009] In an example of this implementation, the direct expansion refrigeration unit includes an evaporation structure and a condensation structure, the evaporation structure is provided with a first circulation channel, the heat conduction device and the condensation structure are an integrated structure, the condensation structure is provided with a second circulation channel, the first circulation channel and the second circulation channel are connected, the first circulation channel and the second circulation channel are used for circulation of a cooling medium, so that the cooling medium absorbs heat in the first circulation channel and then flows to the second circulation channel to release heat.

[0010] In an example of this embodiment, the regeneration heating component includes a first heater and a second heater, the second heater is arranged between the air outlet side of the first heater and the air inlet side of the regeneration zone, the first heater is used to perform primary heating on the regeneration air to obtain primary hot air, the second heater is used to perform secondary heating on the primary hot air to obtain secondary hot air, and the heat conductive device is connected to the first heater.

[0011] In an example of this implementation manner, the temperature difference between the secondary hot air and the primary hot air is in the range of 55°C-65°C, and the temperature range of the secondary hot air is 105°C-115°C.

[0012] In an embodiment of this implementation mode, the dehumidifier also includes a driving mechanism, which is connected to the dehumidification wheel, and the dehumidification wheel can rotate along its own axis under the drive of the driving mechanism; the driving mechanism is a motor, and the motor is provided with lubricating oil for cooling and lubrication, and the heat conducting device is also connected to the motor and extends into the lubricating oil.

[0013] In an embodiment of this implementation, the dehumidifier also includes an electrically connected controller and a temperature detector, the controller is electrically connected to the motor, the temperature detector can obtain the temperature of the first-level hot air and the second-level hot air and send it to the controller, when the temperature of the first-level hot air is lower than 45°C and the temperature difference between the second-level hot air and the first-level hot air is greater than 60°C, the controller controls the motor to increase the speed.

[0014] In an example of this implementation, the temperature difference range between the secondary cold air and the primary cold air is 8°C-10°C, the temperature range of the secondary cold air is 2°C-4°C, and the absolute humidity range of the secondary cold air is 4g / kg-4.9g / kg.

[0015] In an example of this implementation, the dehumidifier further includes a return air cooler, which is arranged in the dehumidification air path and located on the air inlet side of the dehumidification zone, and is used to cool the indoor return air.

[0016] In one embodiment of this implementation, the dehumidifier also includes a post-cooler, which is arranged in the dehumidification air path and located on the air outlet side of the dehumidification zone. The dehumidification zone dehumidifies the secondary cold air to obtain low-humidity cold air, and the post-cooler is used to cool the low-humidity cold air.

[0017] In an example of this implementation manner, the fan assembly includes a dehumidification fan and a regeneration fan, the dehumidification fan is used to form the dehumidification air path, and the regeneration fan is used to form the regeneration air path.

[0018] In an example of this implementation manner, the temperature difference between the first-level hot air and the indoor return air is in the range of 10°C-20°C, and the temperature range of the first-level hot air is in the range of 45°C-55°C.

[0019] In an example of this implementation manner, the temperature difference range between the first-level cold air and the fresh air is 20°C-28°C, the temperature range of the first-level cold air is 10°C-14°C, and the absolute humidity range of the first-level cold air is 8-9.4.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 is a schematic diagram of a dehumidifier provided in an embodiment of the present invention;

[0023] Figure 2 is a schematic diagram of a heat conducting device and related components in an embodiment;

[0024] Figure 3 is a schematic diagram of a heat conducting device and related components in another embodiment;

[0025] Figure 4 is a schematic diagram of a heat conducting device and related components in yet another embodiment;

[0026] Figure 5 is a schematic diagram of a heat conducting device and related components in yet another embodiment.

[0027] Reference numerals:

[0028] Dehumidifier 100; dehumidification wheel 10; dehumidification zone 11; regeneration zone 12; fan assembly 20; dehumidification air path 201; regeneration air path 202; dehumidification fan 21; regeneration fan 22; first refrigerator 31; second refrigerator 32; compressor 321; evaporation structure 322; expander 323; condensation structure 324; first circulation channel 3201; second circulation channel 3202; ventilation channel 3203; return air refrigerator 33; post-cooler 34; regeneration heating assembly 40; first heater 41; second heater 42; heat conduction device 50; motor 61. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and 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, and therefore should not be understood as a limitation on the present invention.

[0031] In the description of the present invention, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0034] See also Figure 1 , Figure 1Schematic diagram of a dehumidifier 100 provided in an embodiment of the present invention. An embodiment of the present invention provides a dehumidifier 100, which can be applied to a factory building requiring a low humidity production environment. The dehumidifier 100 includes a dehumidification rotor 10, a fan assembly 20, a first refrigerator 31, a second refrigerator 32, a regeneration heating assembly 40 and a heat conducting device 50. The dehumidification rotor 10 is provided with a dehumidification zone 11 and a regeneration zone 12. The fan assembly 20 forms a dehumidification air path 201 passing through the dehumidification zone 11 and a regeneration air path 202 passing through the regeneration zone 12, respectively. The first refrigerator 31 is arranged in the dehumidification air path 201 and is located on the air inlet side of the dehumidification zone 11, and is used to cool and dehumidify the fresh air to obtain a first-level cold air. The second refrigerator 32 is arranged in the dehumidification air path 201 and is located between the air outlet side of the first refrigerator 31 and the air inlet side of the dehumidification zone 11, and is used to cool and dehumidify the first-level cold air to obtain a second-level cold air. The regeneration heating assembly 40 is arranged in the regeneration air path 202 and is located at the air inlet side of the regeneration zone 12, and is used to heat the regeneration air. The heat conducting device 50 connects the second refrigerator 32 and the regeneration heating assembly 40, and the heat conducting device 50 can conduct the heat generated by the second refrigerator 32 when cooling and dehumidifying the primary cold air to the regeneration heating assembly 40, so that the regeneration heating assembly 40 can use the heat to heat the regeneration air.

[0035] Specifically, a dehumidifier is provided on the dehumidification wheel 10 to absorb the water in the secondary cold air and for the regeneration air to carry away the water on the dehumidifier. The dehumidifier 100 also includes a driving mechanism, which is connected to the dehumidification wheel 10. The dehumidification wheel 10 can rotate along its own axis under the drive of the driving mechanism, so that different areas of the dehumidification wheel 10 can be switched to the dehumidification air path 201, as a relatively dry dehumidification area 11 to absorb the water in the secondary cold air, thereby achieving dehumidification of the secondary cold air, and different areas of the dehumidification wheel 10 can be switched to the regeneration air path 202, as a relatively wet regeneration area 12, and the water is carried away by the regeneration wind, so that the regeneration area 12 becomes dry again and continues to participate in the dehumidification of the secondary cold air. The first refrigerator 31 and the second refrigerator 32 perform dehumidification while performing cooling to obtain secondary cold air with lower temperature and humidity. The secondary cold air with lower humidity has a small load on the dehumidification wheel 10, and the secondary cold air with lower temperature can better dehumidify on the dehumidification wheel 10, which helps to obtain lower humidity.

[0036] It should be noted that, in this embodiment, the air inlet side of the regeneration zone 12 and the air inlet side of the dehumidification zone 11 are opposite sides of the dehumidification wheel 10, and the flow direction of the regeneration air is opposite to the flow direction of the secondary cold air, so as to improve the efficiency of the regeneration air in removing moisture. In other embodiments, the air inlet side of the regeneration zone 12 and the air inlet side of the dehumidification zone 11 can also be the same side of the dehumidification wheel 10.

[0037] In this embodiment, the dehumidifier 100 is used to be arranged in a factory, and the fresh air entering the dehumidification air path 201 of the dehumidifier 100 is the air outside the factory, and the fresh air can leave the dehumidifier 100 and flow into the factory after dehumidification. The regeneration air flowing into the dehumidifier 100 can be the wind outside the factory or the wind inside the factory, and the regeneration air can take away the moisture on the regeneration area 12 of the dehumidifier 100 and then leave the factory.

[0038] By setting the first refrigerator 31 and the second refrigerator 32, the first refrigerator 31 and the second refrigerator 32 perform two-stage cooling and dehumidification on the fresh air to obtain secondary cold air with lower temperature and humidity, thereby reducing the load of the dehumidification wheel 10, so as to better dehumidify on the dehumidification wheel 10, which helps to obtain lower humidity. At the same time, a heat conducting device 50 is set to connect the second refrigerator 32 and the regeneration heating component 40, and the regeneration heating component 40 can use the heat generated by the refrigeration of the second refrigerator 32 to heat the regeneration air, thereby improving energy utilization and being more energy-saving and environmentally friendly.

[0039] In one embodiment of this implementation, please refer to Figure 1 , the first refrigerator 31 includes a chilled water group, which is used to take away the heat of the fresh air. The second refrigerator 32 includes a direct expansion refrigeration unit, which is used to take away the heat of the first-level cold air, and the direct expansion refrigeration unit is connected to the heat-conducting device 50. The first refrigerator 31 also includes a compressor, which is used to drive the chilled water group to complete the refrigeration cycle. The second refrigerator 32 includes a compressor, which is used to drive the direct expansion refrigeration unit to complete the refrigeration cycle. It can be understood that the cold source used by the chilled water group is chilled water, which has a relatively large specific heat capacity and good stability. When the compressor is suspended, the water temperature fluctuation range of the chilled water is small, and the impact on subsequent refrigeration and dehumidification is small. The efficiency of the direct expansion refrigeration unit is high, and the temperature of the gas can be reduced to a lower level, but its stability is lower than that of the chilled water group. The compressor is easily unloaded due to changes in external temperature and humidity. The compressor stops working, and the high-humidity gas that has not been cooled directly enters the dehumidification wheel 10, causing the load of the dehumidification wheel 10 to rise instantly, and it cannot be dehumidified in time. By setting the first refrigerator 31 as a chilled water group and the second refrigerator 32 as a direct expansion refrigerator, the chilled water group can stably cool and dehumidify the fresh air to ensure that the first cold air entering the direct expansion refrigerator has a stable temperature and humidity, thereby reducing the risk of unloading and shutting down the second refrigerator 32. At the same time, the direct expansion refrigerator can perform efficient cooling and dehumidification to obtain secondary cold air with low humidity and temperature, which is conducive to reducing the load of the dehumidification wheel 10 and improving the dehumidification effect of the dehumidification wheel 10. Moreover, it can be understood that, compared with the chilled water group, the dehumidification and refrigeration of the direct expansion refrigerator can provide higher heat for the regeneration heating component 40 for heating the regeneration air.

[0040] In one embodiment of this implementation, please refer to Figure 1 , the temperature difference between the first-level cold wind and the fresh air ranges from 20℃ to 28℃. The temperature range of the first-level cold wind is 10℃-14℃, and the absolute humidity range of the first-level cold wind is 8g / kg-9.4g / kg. Specifically, the temperature difference between the first-level cold wind and the fresh air can be selected as 20℃, 22℃, 24℃, 28℃, etc., and the temperature of the first-level cold wind can be selected as 10℃, 12℃, 14℃, etc. The absolute humidity of the first-level cold wind can be selected as 8g / kg, 8.7g / kg, 9.4g / kg, etc. In this embodiment, the temperature of the fresh air is 36℃, the temperature of the first-level cold wind is 12℃, the temperature difference is 24℃, and the absolute humidity of the first-level cold wind is 8.7g / kg. With this arrangement, the first refrigerator 31 can perform preliminary cooling and dehumidification on the fresh air, and the degree of cooling and dehumidification is relatively reasonable, which is helpful for subsequent dehumidification. At the same time, the temperature and humidity of the first-level cold wind are relatively stable and appropriate, which helps to further reduce the risk of unloading and shutdown of the second refrigerator 32.

[0041] In one embodiment of this implementation, please refer to Figure 1 , the temperature difference between the secondary cold air and the primary cold air is in the range of 8°C-10°C, the temperature range of the secondary cold air is 2°C-4°C, and the absolute humidity range of the secondary cold air is 4g / kg-4.9g / kg. Specifically, the temperature difference between the secondary cold air and the primary cold air can be selected as 8°C, 9°C, 10°C, etc. The temperature of the secondary cold air can be selected as 2°C, 3°C, 4°C, etc. The absolute humidity of the secondary cold air can be selected as 4g / kg, 4.45g / kg, 4.9g / kg, etc. It can be understood that the second cold air is set in this way to have a suitable low temperature and absolute humidity, and the dehumidification wheel 10 can be fully dehumidified without bringing excessive load to the dehumidification wheel 10.

[0042] In this embodiment, the dehumidification area 11 dehumidifies the secondary cold air to obtain low-humidity cold air, the temperature range of the low-humidity cold air is 19°C-23°C, and the absolute humidity range of the low-humidity cold air is 0.7g / kg-0.9g / kg. Specifically, the temperature of the low-humidity cold air can be selected as 19°C, 20°C, 21°C, 23°C, etc. The absolute humidity of the low-humidity cold air can be selected as 0.7g / kg, 0.8g / kg, 0.9g / kg, etc. This setting can meet the requirements of the low-humidity processing environment of the factory.

[0043] In one embodiment of this implementation, please refer to Figure 1 and Figure 2The direct expansion refrigeration unit includes an evaporation structure 322 and a condensation structure 324. The evaporation structure 322 is provided with a first circulation channel 3201. The condensation structure 324 is connected to the heat-conducting device 50 and is provided with a second circulation channel 3202. The first circulation channel 3201 and the second circulation channel 3202 are connected. The first circulation channel 3201 and the second circulation channel 3202 are used for the circulation of the refrigerant medium, so that the refrigerant medium absorbs heat in the first circulation channel 3201 and then flows to the second circulation channel 3202 to release heat. Specifically, the refrigerant is preferably a refrigerant that can efficiently refrigerate, such as Freon. It can be understood that the refrigerant absorbs the heat of the primary cold air in the first circulation channel 3201 and heats up, and then flows to the second circulation channel 3202 to release heat. The heat-conducting device 50 conducts the heat released by the refrigerant to the regeneration heating component 40 for the regeneration air to heat up.

[0044] In this embodiment, the direct expansion refrigeration unit also includes a compressor 321 and an expander 323, and the compressor 321, the evaporation structure 322, the expander 323 and the condensation structure 324 are connected in sequence and end to end. The compressor 321 is used to compress the cold medium into a high-temperature and high-pressure liquid state, so that the cold medium can be cooled into a low-temperature and high-pressure liquid state at the condensation structure 324. The expander 323 is used to throttle the cold medium, convert the cold medium into a low-temperature and low-pressure liquid state, so that the cold medium can evaporate at the evaporation structure 322 and absorb the heat of the first cold air, thereby achieving the purpose of refrigeration. Among them, the cold medium can absorb heat when evaporating at the evaporation structure 322, thereby refrigerating the first cold air. The cold medium can release heat when condensing at the condensation structure 324, so that the heat can be used for the regeneration heating component 40 to heat the regeneration air.

[0045] In this embodiment, the regenerative heating assembly 40 and the second refrigerator 32 are arranged on opposite sides of the dehumidification wheel 10, and the heat conducting device 50 is constructed as a heat conducting pipe, one end of the heat conducting pipe is connected to the condensation structure 324, and the other end of the heat conducting pipe is connected to the regenerative heating assembly 40, so as to conduct the heat generated by the condensation structure 324 to the regenerative heating assembly 40. This arrangement is so as to facilitate the long-distance transmission of the heat generated by the condensation structure 324 to the regenerative heating assembly 40. It can be understood that in this embodiment, the regenerative heating assembly 40 and the second refrigerator 32 are arranged on opposite sides of the dehumidification wheel 10, and by setting the heat conducting device 50 as a heat conducting pipe, one end of the heat conducting pipe is connected to the condensation structure 324, and the other end of the heat conducting pipe is connected to the regenerative heating assembly 40, the design difficulty of the regenerative heating assembly 40 and the second refrigerator 32 can be reduced, and the heat conduction effect can be achieved at the same time.

[0046] In one embodiment of this implementation, please refer to Figure 1, the regeneration heating assembly 40 includes a first heater 41 and a second heater 42, and the second heater 42 is arranged between the air outlet side of the first heater 41 and the air inlet side of the regeneration zone 12. The first heater 41 is used to perform primary heating on the regeneration air to obtain primary hot air. The second heater 42 is used to perform secondary heating on the primary hot air to obtain secondary hot air, and the heat conducting device 50 is connected to the first heater 41. Specifically, the first heater 41 uses the heat generated by the refrigeration of the direct expansion refrigeration unit conducted by the heat conducting device 50 for heating, and the second heater 42 uses steam, heat conducting oil or electric heating for heating. In this embodiment, the heating temperature of the first heater 41 is close to the temperature of the heat conducting device 50, and the temperature range of the primary hot air obtained by heating the first heater 41 is 45℃-55℃, and the temperature difference between the primary hot air and the regeneration air is 10℃-20℃. Specifically, the temperature of the first-stage hot air is 50°C, and the temperature of the regeneration air is 35°C, and the temperature difference is 15°C. In this configuration, the first heater 41 can use the heat generated by the refrigeration of the second refrigerator 32 to preheat the regeneration air to obtain the first hot air, and then heat the first hot air through the second heater 42 to obtain the second hot air with a sufficiently high temperature, so that the moisture in the regeneration area 12 can be fully taken away by the second hot air. In this process, the heating of the first-stage hot air is achieved by using the heat generated by the refrigeration of the second refrigerator 32, which has high energy utilization and is relatively energy-saving and environmentally friendly.

[0047] In one embodiment of this implementation, please refer to Figure 1 , the temperature difference between the secondary hot air and the primary hot air is in the range of 55℃-65℃, and the temperature range of the secondary hot air is 105℃-115℃. Specifically, the temperature difference between the secondary hot air and the primary hot air can be selected as 55℃, 57℃, 60℃, 65℃, etc. The temperature of the secondary hot air can be selected as 105℃, 108℃, 110℃, 115℃, etc. By setting the temperature difference between the secondary hot air and the primary hot air to within the range of 55℃-65℃, the heating amount required by the second heater 42 is smaller than that of the traditional regeneration air, and the required energy consumption is also lower, which is conducive to energy saving and environmental protection. At the same time, the temperature range of the secondary hot air is set to within the range of 105℃-115℃, the secondary hot air has a sufficient temperature, and the secondary hot air can efficiently take away the moisture in the regeneration zone 12.

[0048] In one embodiment of this implementation, please refer to Figure 1 and Figure 3 The heat conducting device 50 and the condensing structure 324 are integrated into one structure, and the condensing structure 324 is connected to the first heater 41 of the regenerative heating assembly 40 to transfer heat to the first heater 41. In this way, the condensing structure 324 can transfer heat to the first heater 41 in a timely manner, with less heat loss, which can improve energy utilization.

[0049] Furthermore, the condensing structure 324 is disposed around the outer periphery of the first heater 41 so that the condensing structure 324 and the regeneration heating assembly 40 are in full contact, thereby improving the heat transfer efficiency.

[0050] In one embodiment of this implementation, please refer to Figure 1 and Figure 4 , the heat conducting device 50, the first heater 41, and the condensation structure 324 are an integrated structure, and the condensation structure 324 is also provided with a ventilation channel 3203 extending along the curve. The ventilation channel 3203 and the second circulation channel 3202 are arranged in layers and are adjacent, and the extension direction of the ventilation channel 3203 is perpendicular to the extension direction of the second circulation channel 3202. It can be understood that the ventilation channel 3203 extending along the curve can ensure that the regeneration wind fully absorbs heat in the ventilation channel 3203. In addition, the ventilation channel 3203 is directly opened in the condensation structure 324, and the ventilation channel 3203 and the second circulation channel 3202 are arranged in layers and are adjacent, and the heat conduction efficiency is high, and the heat generated by the condensation of the refrigerant in the second circulation channel 3202 can be utilized to a large extent, and the heat is conducted to the regeneration wind of the ventilation channel 3203 through the condensation structure 324, and the heat conduction efficiency is high, and the integration is high. In addition, the extension direction of the ventilation channel 3203 is perpendicular to the extension direction of the second circulation channel 3202, which helps to evenly heat the regeneration wind. At the same time, the material of the condensation structure 324 is preferably metal with good thermal conductivity, and the outer side of the condensation structure 324 is coated with thermal insulation cotton to reduce heat loss and further improve energy utilization.

[0051] In one embodiment of this implementation, please refer to Figure 1 and Figure 5 The driving mechanism for driving the dehumidification wheel 10 to rotate is a motor 61, and the motor 61 is provided with lubricating oil for cooling and lubrication. In addition to being connected to the condensation structure 324, the heat conducting device 50 is also connected to the motor and extends into the lubricating oil to transfer the heat generated by the motor 61 from the lubricating oil to the first heater 41, so that the first heater 41 can heat the regenerated air. It can be understood that the size and weight of the dehumidification wheel 10 are both large, and the specifications of the motor 61 that drives the dehumidification wheel 10 to rotate are also relatively large, and the heat generated is also considerable. By setting the heat conducting device 50 to extend into the lubricating oil of the motor 61, it helps to further improve the energy utilization rate.

[0052] In one embodiment of this implementation, please refer to Figure 1 and Figure 5The dehumidifier 100 further includes an electrically connected controller and a temperature detector. The controller is electrically connected to the motor 61. The temperature detector can obtain the temperature of the primary hot air and the secondary hot air and send it to the controller. When the temperature of the primary hot air is lower than 45°C and the temperature difference between the secondary hot air and the primary hot air is greater than 60°C, the controller controls the motor 61 to increase the speed. It can be understood that when the temperature difference between the secondary hot air and the primary hot air is greater than 60°C, the operating power of the second heater 42 is already very large, and it is difficult to increase the temperature difference between the secondary hot air and the primary hot air by increasing the power of the second heater 42. At this time, if the temperature of the secondary hot air is still not enough to dry the regeneration zone 12 on the dehumidification wheel 10, the dehumidification efficiency will be affected. In this embodiment, the controller can control the motor 61 to increase the speed when the temperature of the first-level hot air is lower than 45°C and the temperature difference between the second-level hot air and the first-level hot air is greater than 60°C. The temperature of the first-level hot air is lower than 45°C, and the heating of the first heater 41 still has a large room for improvement. At this time, the controller controls the motor 61 to increase the speed, which can increase the heat generated by the motor 61, thereby improving the heating effect of the first heater 41 and increasing the temperature of the first-level hot air, so that the temperature of the second-level hot air meets the drying requirements.

[0053] In one embodiment of this implementation, please refer to Figure 1 The dehumidifier 100 also includes a return air cooler 33. The return air cooler 33 is arranged in the dehumidification air path 201 and is located on the air inlet side of the dehumidification zone 11. The return air cooler 33 is used to cool the indoor return air. It can be understood that the indoor return air refers to the gas in the factory. By setting the return air cooler 33, the return air cooler 33 cools the indoor return air, so as to reduce the load on the dehumidification wheel 10, and at the same time, the indoor return air can be further dehumidified to maintain low humidity of the indoor gas.

[0054] In one embodiment of this implementation, please refer to Figure 1 The dehumidifier 100 further includes a post-cooler 34. The post-cooler 34 is arranged in the dehumidification air path 201 and is located at the air outlet side of the dehumidification zone 11. The post-cooler 34 is used to cool the low-humidity cold air. By setting the post-cooler 34, the low-humidity cold air can be cooled to obtain low-temperature and low-humidity cold air that can meet the temperature requirements of the factory.

[0055] In this embodiment, after being cooled by the return air cooler 33, the indoor return air is divided into two paths, one path is dehumidified by the dehumidification zone 11, and the other path is directly cooled by the post-cooler 34. This arrangement can reduce the area requirement of the dehumidification zone 11, thereby reducing the size of the dehumidification wheel 10.

[0056] In one embodiment of this implementation, please refer to Figure 1The fan assembly 20 includes a dehumidification fan 21 and a regeneration fan 22. The dehumidification fan 21 is used to form a dehumidification air path 201, and the regeneration fan 22 is used to form a regeneration air path 202. Specifically, the dehumidification fan 21 is arranged on the air outlet side of the post-cooler 34, and the regeneration fan 22 is arranged on the air outlet side of the regeneration zone 12. By arranging the dehumidification fan 21 and the regeneration fan 22, the dehumidification air path 201 and the regeneration air path 202 are relatively independent, which can reduce the mutual influence of the dehumidification process and the regeneration process, thereby improving efficiency.

[0057] It is understandable that the dehumidifier 100 is provided with corresponding dehumidification pipelines and regeneration pipelines. The dehumidification fan 21 provides wind pressure for the dehumidification pipeline so that fresh air can flow along the dehumidification pipeline, thereby forming a dehumidification air path 201. The regeneration fan 22 provides wind pressure for the regeneration pipeline so that regeneration air can flow along the regeneration pipeline, thereby forming a regeneration air path 202.

[0058] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present invention. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. A dehumidifier, characterized in that: include: A dehumidification wheel having a dehumidification zone and a regeneration zone; A fan assembly, forming a dehumidification air path passing through the dehumidification zone and a regeneration air path passing through the regeneration zone respectively; A first refrigerator is arranged in the dehumidification air path and located at the air inlet side of the dehumidification zone, and is used to cool and dehumidify the fresh air to obtain primary cold air; A second refrigerator is arranged in the dehumidification air path and is located between the air outlet side of the first refrigerator and the air inlet side of the dehumidification zone, and is used to cool and dehumidify the primary cold air to obtain secondary cold air; A regeneration heating component is arranged in the regeneration air path and located at the air inlet side of the regeneration zone, and is used to heat the regeneration air; a heat conducting device, connecting the second refrigerator and the regeneration heating component, wherein the heat conducting device can conduct heat generated when the second refrigerator cools and dehumidifies the primary cold air to the regeneration heating component, so that the regeneration heating component can use the heat to heat the regeneration air; Wherein, the first refrigerator comprises a chilled water group, and the chilled water group is used to take away the heat of the fresh air; the second refrigerator comprises a direct expansion refrigeration unit, and the direct expansion refrigeration unit is used to take away the heat of the primary cold air, and the direct expansion refrigeration unit is connected to the heat conduction device; The regeneration heating assembly comprises a first heater and a second heater, the second heater being arranged between the air outlet side of the first heater and the air inlet side of the regeneration zone, the first heater being used for performing primary heating on the regeneration air to obtain primary hot air, the second heater being used for performing secondary heating on the primary hot air to obtain secondary hot air, and the heat conducting device being connected to the first heater; The dehumidifier further comprises a driving mechanism, the driving mechanism is connected to the dehumidification wheel, and the dehumidification wheel can rotate along its own axis under the drive of the driving mechanism; the driving mechanism is a motor, and the motor is provided with lubricating oil for cooling and lubrication, and the heat conducting device is also connected to the motor and extends into the lubricating oil; The dehumidifier also includes an electrically connected controller and a temperature detector, wherein the controller is electrically connected to the motor, and the temperature detector can obtain the temperatures of the first-level hot air and the second-level hot air and send them to the controller. When the temperature of the first-level hot air is lower than 45°C and the temperature difference between the second-level hot air and the first-level hot air is greater than 60°C, the controller controls the motor to increase the rotation speed.

2. The dehumidifier according to claim 1, characterized in that: The direct expansion refrigeration unit includes an evaporation structure and a condensation structure. The evaporation structure is provided with a first circulation channel. The condensation structure is connected to the heat conduction device and is provided with a second circulation channel. The first circulation channel and the second circulation channel are communicated. The first circulation channel and the second circulation channel are used for circulation of a cooling medium so that the cooling medium absorbs heat in the first circulation channel and then flows to the second circulation channel to release heat.

3. The dehumidifier according to claim 2, characterized in that: The regenerative heating component and the second refrigerator are arranged on opposite sides of the dehumidification wheel, and the heat conducting device is constructed as a heat conducting pipe, one end of the heat conducting pipe is connected to the condensation structure, and the other end of the heat conducting pipe is connected to the regenerative heating component.

4. The dehumidifier according to claim 1, characterized in that: The direct expansion refrigeration unit includes an evaporation structure and a condensation structure. The evaporation structure is provided with a first circulation channel. The heat conduction device and the condensation structure are an integrated structure. The condensation structure is provided with a second circulation channel. The first circulation channel and the second circulation channel are connected. The first circulation channel and the second circulation channel are used for circulation of a cooling medium so that the cooling medium absorbs heat in the first circulation channel and then flows to the second circulation channel to release heat.

5. The dehumidifier according to claim 1, characterized in that: The temperature difference between the secondary hot air and the primary hot air is in the range of 55°C-65°C, and the temperature range of the secondary hot air is in the range of 105°C-115°C.

6. The dehumidifier according to claim 1, characterized in that: The dehumidifier further comprises a return air cooler, which is arranged in the dehumidification air path and located at the air inlet side of the dehumidification zone, and is used for cooling indoor return air.

7. The dehumidifier according to claim 1, characterized in that: The dehumidifier also includes a post-cooler, which is arranged in the dehumidification air path and located on the air outlet side of the dehumidification zone. The dehumidification zone dehumidifies the secondary cold air to obtain low-humidity cold air, and the post-cooler is used to cool the low-humidity cold air.

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