Regenerated airflow generating device and rotary dehumidifier

Abstract

The invention relates to a regenerated air flow generating device and a rotary dehumidifier, and the regenerated air flow generating device comprises a circulating air flow pipe which is provided with a first pipe section and a second pipe section which are communicated with each other; the regeneration fan is arranged at the air inlet end of the first pipe section; the heating piece is arranged in the second pipe section; and the flow dividing piece is arranged in the circulating airflow pipe. According to the regenerated airflow generating device and the rotary dehumidifier, the flow dividing piece is arranged in the circulating airflow pipe, part of airflow generated by the draught fan is actively guided to the near-end area, close to the draught fan, in the heater, and the airflow distribution state in the whole heater area is effectively improved; the problem that the local heat exchange efficiency is low due to uneven airflow is solved. Therefore, the device can generate regeneration hot air with more uniform flow and temperature distribution, the effective regeneration area of the dehumidification rotating wheel is increased, and finally the regeneration efficiency of the rotating wheel and the dehumidification performance of the whole machine are improved.

Description

Technical Field

[0001] The present application relates to the technical field of dehumidification equipment, and in particular to a regenerative airflow generating device and a rotary dehumidifier. Background Art

[0002] A rotary dehumidifier is a highly efficient air dehumidification device that operates on the regeneration process of a moisture-absorbing rotor. It typically consists of two independent air circulation systems: a process air system and a regeneration air system. The process air system is responsible for passing the dehumidified air through the moisture-absorbing rotor for dehumidification. The regeneration air system is responsible for heating and drying the moisture-absorbing rotor, restoring its moisture-absorbing capacity and achieving continuous dehumidification.

[0003] In actual product design, to achieve a compact overall structure, the internal space of the regenerative airflow generator is often designed to be relatively flat, and the fan is usually a centrifugal fan because it can provide high wind pressure within a limited space. However, the wind speed at the outlet of a centrifugal fan is extremely high and has strong directionality. When this high-speed airflow enters the subsequent flat heating chamber, due to inertia, the vast majority of the airflow will follow its exit direction and rush directly to and concentrate on the end of the heating chamber away from the fan. In contrast, the area close to the fan forms a low-speed area because the airflow is "suspended".

[0004] This severely uneven airflow distribution results in a low flow rate near the fan outlet, preventing the heat generated by the heating element in that area from being effectively removed, causing local overheating and wasted heat energy. Ultimately, the hot air flowing out of the heater's outlet has an uneven flow rate and volume distribution. Summary of the Invention

[0005] In order to solve the above problems, the present application provides a regeneration airflow generating device and a rotary dehumidifier that optimizes the distribution uniformity of the regeneration airflow on the heater, thereby improving the regeneration efficiency of the dehumidification wheel and the dehumidification performance of the entire machine.

[0006] In order to achieve the above objectives, in a first aspect, an embodiment of the present application provides a regenerative airflow generating device, comprising: A circulating air flow pipe having a first pipe section and a second pipe section that are connected; a regeneration fan, arranged at the air inlet end of the first pipe section; a heating element, disposed in the second pipe section; A flow dividing member, arranged in the circulating air flow pipe; The second pipe section has a proximal area close to the regeneration fan and a distal area away from the regeneration fan, and at least a portion of the diverter extends into the second pipe section to change the direction of the airflow entering the second pipe section, thereby balancing the air volume in the proximal area and the distal area.

[0007] Preferably, the diverter element comprises a first baffle, one end of which extends into the second pipe section and is inclined toward the heating element.

[0008] Preferably, the other end of the first partition extends into the first pipe section, and the first partition divides the circulating air flow pipe into a first air duct and a second air duct, the air outlet end of the first air duct corresponds to the proximal area, and the air outlet end of the second air duct corresponds to the distal area.

[0009] Preferably, the first partition includes a first section, a second section and an arc section connected in sequence, the first section is accommodated in the first tube section, the second section and the arc section are accommodated in the second tube section, and the arc section is bent in a direction away from the heating element.

[0010] Preferably, the second pipe section includes a heating box, which includes a bottom shell and a cover body connected to each other, the heating element is fixed in the bottom shell, and an air flow outlet is provided on the rear side of the bottom shell; the cover body is tilted toward the heating element at one end away from the regeneration fan.

[0011] Preferably, the heating element includes a plurality of PTC heaters arranged side by side; an inwardly extending mounting ledge is provided at the air flow outlet of the heating box, the bottom peripheries of the plurality of PTC heaters are supported on the mounting ledge, and the cover body presses the PTC heaters into the bottom shell.

[0012] Preferably, the first pipe section includes a volute, the volute includes a main shell, a front cover and a rear cover respectively connected to the front and rear sides of the main shell, the rear cover is provided with an air flow inlet, the regeneration fan includes a wind wheel and a DC brushless motor driving the wind wheel to rotate, the DC brushless motor is fixed on the outer wall of the front cover, the output shaft of the DC brushless motor passes through the front cover and is connected to the wind wheel, the thickness of the volute is less than the thickness of the heating box, and the rear cover is provided with a slope at one end close to the heating box.

[0013] Preferably, the first partition is provided with a hollow first protrusion structure protruding toward the front side and / or the cover body is provided with a hollow second protrusion structure protruding toward the front side, the end of the first protrusion structure extends to the position of the proximal area close to the air inlet of the heating box, the second protrusion structure extends from the proximal area to the distal area, the width of the second protrusion structure gradually decreases along the direction of airflow flow, the end of the second protrusion structure is arranged toward the side of the volute having a volute tongue, and the depth of the chamber enclosed by the second protrusion structure gradually increases along the direction of airflow flow.

[0014] Preferably, the diverter includes a second partition arranged on the inner wall of the second pipe section, with a gap between the second partition and the heating element. The second partition is arranged in a direction parallel to the width direction of the heating element and is vertically arranged or inclined relative to the vertical direction.

[0015] In a second aspect, an embodiment of the present application provides a rotary dehumidifier, comprising the regeneration airflow generating device described in any embodiment of the first aspect.

[0016] The regenerative airflow generating device and rotary dehumidifier designed in this application utilizes a diverter within the circulating airflow tube to actively direct a portion of the airflow generated by the fan to the proximal region of the heater, effectively improving the airflow distribution within the entire heater area and resolving the problem of low local heat exchange efficiency caused by uneven airflow. As a result, the device generates regenerative hot air with a more uniform flow and temperature distribution, increasing the effective regeneration area for the dehumidification rotor and ultimately improving the regeneration efficiency of the rotor and the dehumidification performance of the entire unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the regeneration airflow generating device provided in an embodiment of the present application.

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the regeneration airflow generating device provided in an embodiment of the present application from another perspective.

[0019] Figure 3 yes Figure 1 3D exploded view of .

[0020] Figure 4 yes Figure 1 A three-dimensional exploded view from another perspective.

[0021] Figure 5 yes Figure 1 Front view of .

[0022] Figure 6 yes Figure 5 Three-dimensional cross-section view at AA in the middle.

[0023] Figure 7 It is a cross-sectional view of a regenerative airflow generating device provided in another embodiment of the present application.

[0024] Among them: circulating air flow pipe 10, first pipe section 11, second pipe section 12, proximal area 12a, distal area 12b, regeneration fan 20, wind wheel 21, DC brushless motor 22, heating element 30, terminal 31, diverter 40, first partition 41, first section 41a, second section 41b, arc section 41c, first protruding structure 51, second protruding structure 52, second partition 60, volute 110, main shell 111, front cover 112, rear cover 113, air flow inlet 114, slope 115, volute tongue 116, heating box 120, bottom shell 121, cover body 122, air flow outlet 123, mounting convex eaves 124, wiring hole 125, first air duct F1, second air duct F2. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application and are not used to limit the present application.

[0026] First, embodiments of the present application provide a regenerative airflow generating device. This regenerative airflow generating device can be used in a rotary dehumidifier. For example, it can be installed on one side of the axial direction of the dehumidifier's rotor (not shown) to generate regenerative hot air. For ease of description, the side of the regenerative airflow generating device and its components closest to the rotor is defined as the rear side, and the side away from the rotor is defined as the front side.

[0027] like Figure 1 、 Figure 3 、 Figure 7 As shown, the regeneration airflow generating device mainly includes a circulating airflow pipe 10, a regeneration fan 20, a heating element 30, and diverter elements 40a and 40b arranged in the circulating airflow pipe 10. The circulating airflow pipe 10 is a flat structure as a whole, and its interior defines a connected airflow channel. Specifically, the circulating airflow pipe 10 has a first pipe section 11 and a second pipe section 12 that are connected. The regeneration fan 20 is arranged at the air inlet end of the first pipe section 11, and its air outlet is facing the second pipe section 12, which can provide airflow and blow it toward the second pipe section 12. The heating element 30 is arranged in the second pipe section 12 to heat the air flowing through it.

[0028] like Figure 1 、 Figure 6 、 Figure 7As shown, the second pipe section 12 has a proximal area 12a close to the regeneration fan 20 and a distal area 12b away from the regeneration fan 20, and at least a portion of the diverter 40a, 40b extends into the second pipe section 12, that is, the diverter 40a, 40b is arranged between the regeneration fan 20 and the heating element 30 to change the direction of the airflow entering the second pipe section 12, actively intercept a portion of the high-speed airflow blown out from the regeneration fan 20, and guide and distribute it to the proximal area 12a where the flow rate is originally smaller, so that the airflow distribution in the entire second pipe section 12 tends to be uniform, thereby balancing the air volume in the proximal area 12a and the distal area 12b.

[0029] like Figure 2 、 Figure 4 As shown, the first pipe section 11 includes a volute 110, and the second pipe section 12 includes a heating box 120. The heating box 120 and the volute 110 are connected to form a complete circulating airflow pipe 10. Specifically, the two can be fixed by flange connection, bolt connection, or snap-fit ​​structure to ensure the airtightness of the connection. In this embodiment, the volute 110 is the main outer shell structure of the regeneration blower 20, while the heating box 120 serves as the heating channel for the airflow. Its internal space is relatively large to accommodate the heater 30 and provide sufficient space for airflow heating.

[0030] Furthermore, if Figure 2 、 Figure 3 As shown, the heating box 120 includes a connected bottom shell 121 and a cover 122. The heating element 30 is fixed in the bottom shell 121. The rear side of the bottom shell 121 is provided with an airflow outlet 123. When assembled in a rotary dehumidifier, the bottom shell 121 is located near the regeneration zone of the rotor. The airflow generated by the regeneration fan 20 enters the heating box 120, is heated by the heating element 30 to form hot air, and then flows out of the airflow outlet 123 and blows toward the rotor, removing moisture from the regeneration zone of the rotor. In addition, in order to cooperate with the diverter 40a to optimize the airflow, the cover body 122 can be tilted toward the heating element 30 at the end away from the regeneration fan 20, and the cover body 122 forms an inclined surface inside the end. When the airflow flows to the inclined surface of the cover body 122, it is blocked, causing the airflow to change direction and flow to the distal area 12b, avoiding the airflow directly flowing to the side wall of the heating box 120 close to the distal area 12b and then flowing back. In this way, the airflow flowing to the distal area 12b is more uniform and the airflow rate is more stable.

[0031] In one embodiment, if Figure 3 、 Figure 6 As shown, the flow divider 40a includes a first baffle 41, one end of which extends into the second pipe section 12 and is tilted toward the heating element 30. In a specific implementation, the first baffle 41 can be only provided in the second pipe section 12, i.e., the heating box 120, to change the direction of the airflow entering the second pipe section 12, thereby balancing the air volume in the proximal region 12a and the distal region 12b.

[0032] like Figure 3 、 Figure 6 As shown, the other end of the first partition 41 extends into the first pipe section 11 and extends close to the regeneration fan 20. The first partition 41 divides the circulating airflow pipe 10 into a first air duct F1 and a second air duct F2. The outlet end of the first air duct F1 corresponds to the proximal region 12a, and the outlet end of the second air duct F2 corresponds to the distal region 12b. This achieves forced and precise airflow distribution.

[0033] Furthermore, if Figure 3 、 Figure 6 As shown, the first partition 41 includes a first section 41a, a second section 41b and an arc section 41c connected in sequence. The first section 41a is accommodated in the first pipe section 11, and the second section 41b and the arc section 41c are accommodated in the second pipe section 12. The arc section 41c is bent in the direction away from the heating element 30. The provision of the arc section 41c further optimizes the guiding effect of the airflow, so that the airflow can change its direction more smoothly when passing through the arc section 41c, reducing flow separation and pressure loss. In a specific implementation, the first section 41a of the first partition 41 is integrally formed with the volute 110, the first section 41a and the second section 41b are connected to each other, the second section 41b and the arc section 41c can be integrally formed, and the second section 41b and the arc section 41c can also be inserted and assembled in the heating box 120. This can save manufacturing processes, and the use of an integral molding method can also save the operation of docking and installing the two, and also save the sealing structure that needs to be set at the docking point after the two are docked and installed. It can be understood that the number of the first partitions 41 in the circulating air flow tube 10 is not limited to one, and the number can be increased according to the actual thickness of the circulating air flow tube.

[0034] like Figure 2 、 Figure 6 As shown, the heating element 30 includes a plurality of PTC heaters arranged side by side; an inwardly extending mounting flange 124 is provided at the air flow outlet 123 of the heating box 120, and the bottom periphery of the plurality of PTC heaters is supported on the mounting flange 124. The cover 122 presses the PTC heater into the bottom shell 121. The installation is simple and convenient, which facilitates quick assembly. In this embodiment, a PTC heater is used as the heating element. It has good safety performance, uniform heating, and does not produce the phenomenon of surface redness like tungsten filament. There is no need to set a shielding part at the corresponding gap of the casing to block the light emitted by the tungsten filament. The overall structure of the product is simple, and the PTC heater has a long service life, which reduces maintenance costs.

[0035] When implementing it specifically, Figure 3 、 Figure 4 、 Figure 6As shown, two adjacent PTC heaters in each assembly are bonded together. This allows the heaters 30 to be bonded together into a single, side-by-side heating module before being installed in the heating box 120. This eliminates the need to install each PTC heater individually. One end of the PTC heater has a terminal block 31, which is connected to the rotary dehumidifier's power supply via a cable. The sidewalls of the heating box 120 have wiring holes 125 for the cables to extend through.

[0036] like Figure 3 、 Figure 4 、 Figure 6 As shown, the volute 110 includes a main shell 111, a front cover plate 112 and a rear cover plate 113 respectively connected to the front and rear sides of the main shell 111. The main shell 111, the front cover plate 112 and the rear cover plate 113 jointly define the first pipe section 11. The first section 41a of the first partition plate 41 is arranged in parallel with the front cover plate 112, and the first section 41a can be arranged in the middle position of the main shell 111. The rear cover plate 113 is provided with an air flow inlet 114. The regeneration fan 20 includes a wind wheel 21 and a DC brushless motor 22 for driving the wind wheel 21 to rotate. The DC brushless motor 22 is fixed to the outer wall of the front cover plate 112, and the output shaft of the DC brushless motor 22 passes through the front cover plate 112 and is connected to the wind wheel 21. In this embodiment, as shown in FIG. Figure 6 As shown, the thickness of the volute 110 is less than that of the heating box 120, and a slope 115 is provided on one end of the rear cover 113 near the heating box 120. Furthermore, the thickness of the entrance where the heating box 120 connects to the volute 110 is thinner than that of other areas. The structure of the slope 115 provided on the rear cover 113 of the volute 110 forms a smooth transition surface, effectively guiding the airflow and preventing the airflow from encountering steps or right-angle structures when entering the entrance of the heating box 120, causing impact, rebound, or unnecessary turbulence, thereby ensuring smooth airflow delivery. In this embodiment, the first section 41a of the first partition 41 is integrally formed with the main housing 111.

[0037] like Figures 3 to 5As shown, the cover 122 and / or the first partition 41 of the heating box 120 are provided with a raised structure. The raised structure is a hollow structure that protrudes toward the front side, and its smooth surface helps reduce airflow resistance. Specifically, a first raised structure 51 is provided on the first partition 41. The width of the first raised structure 51 can be designed to gradually decrease along the direction of airflow, that is, from the first pipe section 11 to the second pipe section 12. The first raised structure 51 extends from the first section 41a to the second section 41b. The starting end of the first raised structure 51 is located on the side away from the volute 110 with the volute tongue 116. The end of the first raised structure 51 extends to the proximal region 12a near the air inlet of the heating box 120. The depth of the chamber enclosed by the first raised structure 51 gradually increases along the direction of airflow, thereby increasing the airflow rate in the proximal region 12a near the air inlet of the heating box 120. The cover 122 is provided with a second raised structure 52, the width of which can also be designed to gradually decrease along the airflow direction. The end of the second raised structure 52 is located toward the side of the volute 110 having the volute tongue 116, and the end of the second raised structure 52 can extend to a position corresponding to the distal region 12b of the heating box 120 to enhance the airflow in the corresponding area. The depth of the chamber enclosed by the second raised structure 52 gradually increases along the airflow direction.

[0038] In another embodiment, Figure 7 As shown, the flow diverter 40b includes a second baffle 60 disposed on the inner wall of the second tube section 12, with a gap between the second baffle 60 and the heater 30. The second baffle 60 is arranged parallel to the width of the heater 30. In this embodiment, the second baffle 60 can be arranged vertically or tilted relative to the vertical direction. By forming a physical obstruction in the airflow path, it forces a portion of the airflow that would originally flow to the distal region 12b to change its flow path and be diverted to the proximal region 12a, where the flow rate is lower, thereby achieving the purpose of improving the uniformity of airflow distribution.

[0039] In a second aspect, an embodiment of the present application provides a rotary dehumidifier, comprising the regeneration airflow generating device of any embodiment of the first aspect. Due to the use of the regeneration airflow generating device, the rotary dehumidifier has the advantages of high regeneration efficiency and good dehumidification performance of the whole machine.

[0040] The regenerative airflow generating device and rotary dehumidifier provided in the embodiments of the present application utilize a diverter within the circulating airflow tube to actively direct a portion of the airflow generated by the fan to the proximal region of the heater, near the fan. This effectively improves the airflow distribution within the entire heater region and resolves the problem of low local heat exchange efficiency caused by uneven airflow. As a result, the device generates regenerative hot air with a more uniform flow and temperature distribution, increasing the effective regeneration area for the dehumidification rotor and ultimately improving the regeneration efficiency of the rotor and the dehumidification performance of the entire unit.

[0041] In the description of this application, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0042] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0043] Finally, it should be noted that the above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A regenerative airflow generating device, characterized in that: include: A circulating air flow pipe having a first pipe section and a second pipe section that are connected; a regeneration fan, arranged at the air inlet end of the first pipe section; a heating element, disposed in the second pipe section; A diverter is arranged in the circulating air flow pipe; wherein, the second pipe section has a proximal area close to the regeneration fan and a distal area away from the regeneration fan, and at least a portion of the diverter extends into the second pipe section to change the direction of the airflow entering the second pipe section, thereby balancing the air volume in the proximal area and the distal area.

2. The regeneration airflow generating device according to claim 1, characterized in that: The flow dividing element includes a first partition plate, one end of which extends into the second pipe section and is tilted toward the heating element.

3. The regeneration airflow generating device according to claim 2, characterized in that: The other end of the first partition extends into the first pipe section, and the first partition divides the circulating air flow pipe into a first air duct and a second air duct. The air outlet end of the first air duct corresponds to the proximal area, and the air outlet end of the second air duct corresponds to the distal area.

4. The regeneration airflow generating device according to claim 3, characterized in that: The first partition includes a first section, a second section and an arc section connected in sequence, the first section is accommodated in the first tube section, the second section and the arc section are accommodated in the second tube section, and the arc section is bent in a direction away from the heating element.

5. The regeneration airflow generating device according to any one of claims 2 to 4, characterized in that: The second pipe section includes a heating box, which includes a bottom shell and a cover body connected to each other. The heating element is fixed in the bottom shell, and an air flow outlet is provided on the rear side of the bottom shell; the cover body is tilted toward the heating element at one end away from the regeneration fan.

6. The regeneration airflow generating device according to claim 5, characterized in that: The heating element includes a plurality of PTC heaters arranged side by side; an inwardly extending mounting ledge is provided at the air flow outlet of the heating box, the bottom peripheries of the plurality of PTC heaters are supported on the mounting ledge, and the cover body presses the PTC heaters into the bottom shell.

7. The regeneration airflow generating device according to claim 5, characterized in that: The first pipe section includes a volute, which includes a main shell, a front cover and a rear cover respectively connected to the front and rear sides of the main shell, the rear cover is provided with an air flow inlet, the regeneration fan includes a wind wheel and a DC brushless motor that drives the wind wheel to rotate, the DC brushless motor is fixed to the outer wall of the front cover, the output shaft of the DC brushless motor passes through the front cover and is connected to the wind wheel, the thickness of the volute is less than the thickness of the heating box, and the rear cover is provided with a slope at one end close to the heating box.

8. The regeneration airflow generating device according to claim 7, characterized in that: The first partition is provided with a hollow first protrusion structure on the front side and / or the cover body is provided with a hollow second protrusion structure on the front side, the end of the first protrusion structure extends to the position of the proximal area close to the air inlet of the heating box, the second protrusion structure extends from the proximal area to the distal area, the width of the second protrusion structure gradually decreases along the direction of airflow, the end of the second protrusion structure is arranged toward the side of the volute with a volute tongue, and the depth of the chamber enclosed by the second protrusion structure gradually increases along the direction of airflow.

9. The regeneration airflow generating device according to claim 1, characterized in that: The diverter includes a second partition plate arranged on the inner wall of the second pipe section, with a gap between the second partition plate and the heating element. The second partition plate is arranged in a direction parallel to the width direction of the heating element and is vertically arranged or inclined relative to the vertical direction.

10. A rotary dehumidifier, characterized in that: It comprises the regeneration wind flow generating device as described in any one of claims 1-9.

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