Heat recovery type rotating wheel dehumidification temperature-controllable device

Abstract

The invention relates to a heat recovery type rotating wheel dehumidification temperature-controllable device which comprises a rotating wheel, the rotating wheel comprises a dehumidification area and a regeneration area, the regeneration area is provided with a heater, the heat recovery type rotating wheel dehumidification temperature-controllable device further comprises a condensation mechanism, a heat recovery mechanism and a gas diversion system, and the condensation mechanism is installed at the air outlet end of the regeneration area; the high-temperature and high-humidity gas exhausted from the air outlet end of the regeneration area reaches the dew-point temperature; the heat recovery mechanism is installed at the air inlet end of the heater and used for recovering the high-temperature gas exhausted by the condensation mechanism and primarily heating the low-temperature gas to enter the heater. The gas flow guide system can automatically control the flow direction of dry gas according to requirements so that the dry gas can be subjected to condensation and heat recovery operation according to the requirements, meanwhile, under the condition of different gas flow directions, the gas is controlled to be subjected to 0-2 times of any number of heat exchange and mixed according to the requirements, the temperature of the discharged dry gas can be regulated and controlled, and compared with single-temperature output of a traditional rotating wheel, the energy-saving and environment-friendly effects are achieved. And multiple temperatures can be continuously regulated and controlled, so that different environment requirements can be met.

Description

Technical Field

[0001] This invention relates to the field of dehumidification device technology, specifically to a heat recovery type rotary dehumidification temperature control device. Background Technology

[0002] Rotary dehumidification technology, as an advanced solid adsorption dehumidification solution, can control and regulate humidity in the environment. It is widely used in production workshops of many industries, including food processing, chemical synthesis, printing and packaging, semiconductor manufacturing, electronic components, and aerospace products. The core technology of a rotary dehumidifier lies in its rotating honeycomb-shaped drying rotor. This rotor is made of a special moisture-absorbing material and is divided into two independent air zones: a treatment air zone and a regeneration air zone. During dehumidification, the dehumidification rotor rotates continuously. The humid air to be treated (treatment air) is driven by a fan through the treatment air zone of the rotor. The moisture-absorbing material inside the rotor (usually silica gel or molecular sieves) has a huge specific surface area and strong physical adsorption capacity, which can efficiently capture water molecules in the air, thus drying the air in the outflow area. Simultaneously, another stream of air (regeneration air) is heated to a high temperature of 100-140°C by a heater (usually electric or steam heating) and blown back into the regeneration air zone of the rotor. High temperatures allow water molecules adsorbed on the moisture-absorbing material to gain energy and desorb, thus restoring the desiccant's moisture-absorbing capacity. However, traditional rotary dehumidifiers can only produce dry gas at one temperature, and the high-temperature, high-humidity gas produced is directly discharged, resulting in energy loss and increasing the humidity in the discharged environment. Therefore, a heat recovery type rotary dehumidifier with temperature control is urgently needed to solve the above problems. Summary of the Invention

[0003] The purpose of this invention is to provide a heat recovery type rotary dehumidifier with controllable temperature to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a heat recovery type rotary dehumidifier with controllable temperature, comprising a rotary wheel, the rotary wheel including a dehumidification zone and a regeneration zone, the regeneration zone being equipped with a heater, and further comprising: A condensing mechanism is installed at the air outlet of the regeneration zone, and the condensing mechanism is configured to bring the high-temperature and high-humidity gas discharged from the air outlet of the regeneration zone to the dew point temperature. A heat recovery mechanism is installed at the air inlet of the heater. The heat recovery mechanism is configured to recover the high-temperature gas discharged from the condensation mechanism and to preheat the low-temperature gas to be introduced into the heater. The gas diversion system shall at least perform the following diversion operations: Airflow guidance operation 1: Guide the dry gas from the air outlet of the dehumidification zone to be discharged; Second diversion operation: guide the dry gas at the air outlet of the dehumidification zone into the condensation mechanism, and after the dry gas participates in heat exchange, it forms high-temperature gas, which is then guided to the air outlet of the dehumidification zone for discharge. Flow guidance operation 3: Guide the dry gas from the dehumidification zone outlet into the condensation mechanism, and after the dry gas participates in heat exchange, the high-temperature gas is guided to the heat recovery mechanism for secondary heat exchange to form low-temperature dry gas; the low-temperature dry gas is then guided to the dehumidification zone outlet for discharge.

[0005] Preferably, the gas guiding system includes a manifold, an exhaust pipe, a first return pipe, a second return pipe, a heat recovery inlet pipe, and a heat recovery outlet pipe. The manifold is installed in a covering manner at the outlet of the dehumidification zone to receive the dry gas discharged from the outlet of the dehumidification zone. One end of the exhaust pipe is connected to the outlet of the manifold, and the other end is used to discharge the dry gas, or connected to one end of the first return pipe through a valve. The other end of the first return pipe is connected to the return inlet of the condensation mechanism. One end of the second return pipe is connected to the return outlet of the condensation mechanism, and the other end is connected to the exhaust pipe, or connected to one end of the heat recovery inlet pipe through a valve. The other end of the heat recovery inlet pipe is connected to the return inlet of the heat recovery mechanism, and the return outlet of the heat recovery mechanism is connected to the exhaust pipe through the heat recovery outlet pipe.

[0006] Preferably, an electrically controlled proportional valve is provided at the connection between the exhaust pipe and the first return pipe, the thermal connection between the second return pipe and the exhaust pipe, and the thermal connection between the heat recovery outlet pipe and the exhaust pipe. The electrically controlled proportional valve is used to control the flow rate of different flow directions in the corresponding pipes.

[0007] Preferably, the exhaust duct discharges one or more of the following gases: a mixture of dry gas discharged from the outlet of the dehumidification zone, a mixture of low-temperature dry gas discharged from the heat recovery mechanism, and a mixture of high-temperature gas discharged from the condensation mechanism.

[0008] Preferably, the condensation mechanism includes: Several hollow cold plates, each with its top connected to the reflux inlet of the condensing mechanism via an air inlet pipe to receive dry gas delivered from the first reflux pipe, and each with its bottom connected to the reflux outlet of the condensing mechanism via an air outlet pipe to deliver high-temperature gas into the second reflux pipe. An intake baffle is installed at the intake end of the condenser mechanism; An exhaust baffle is installed at the exhaust end of the condensation mechanism; The inlet baffle and outlet baffle form an S-channel, which guides the dry gas to enter from the bottom of the hollow cold plate and exit from the top of the hollow cold plate.

[0009] Preferably, each of the hollow cold plates has an arc-shaped structure, and a wave-shaped condensation channel is formed between the connected hollow cold plates in the vertical direction.

[0010] Preferably, each of the hollow cold plates is equipped with a drawer-type water collection box on its top for receiving condensate that slides down the hollow cold plate.

[0011] Preferably, the heat recovery mechanism includes: case; A heat recovery hollow plate is installed inside the housing. One end of the heat recovery hollow plate is connected to the heat recovery air inlet pipe, and the other end is connected to the heat recovery air outlet pipe. The heat recovery inlet is used to guide the regeneration gas into the outer casing and to contact the heat recovery hollow plate. The heat recovery outlet is used to guide the gas that has undergone heat exchange into the heater.

[0012] Preferably, the heat recovery hollow plate has a vortex structure, with the central end of the vortex-shaped heat recovery hollow plate connected to the heat recovery air inlet pipe and the outer periphery of the vortex-shaped heat recovery hollow plate connected to the heat recovery air outlet pipe.

[0013] Preferably, the heat recovery hollow plate with a vortex structure forms a vortex channel inside the shell. The heat recovery air inlet is connected to the center of the vortex channel, and the vortex channel is connected to the periphery of the vortex channel. It is configured to guide the regeneration gas from the center of the vortex channel along the vortex channel to the periphery and then enter the heater through the heat recovery air outlet.

[0014] Beneficial effects: This invention utilizes a condensation mechanism to bring the high-temperature, high-humidity gas discharged from the regeneration zone's outlet to its dew point temperature, thereby dehumidifying the emissions from the regeneration zone and reducing the humidity of the gas discharged from the outlet. Simultaneously, it facilitates heat exchange, absorbing heat and, in conjunction with a heat recovery mechanism, reusing the heat to preheat the gas at the regeneration zone's inlet, reducing energy consumption and maximizing resource utilization. Furthermore, the gas flow guiding system automatically controls the flow direction of the drying gas according to demand, enabling condensation and heat recovery operations as needed. Under different gas flow directions, the gas undergoes 0-2 heat exchanges of any number and is mixed as required, allowing for temperature regulation at the outlet. Compared to traditional rotary dryers with a single temperature output, this invention offers multiple temperatures and continuous temperature control, making it suitable for various environmental requirements. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the rotary purification and dehumidification device of the present invention from one perspective; Figure 2 This is a schematic diagram of the rotary purification and dehumidification device of the present invention from another perspective; Figure 3 This is a schematic diagram of the condensation mechanism of the present invention; Figure 4 This is a schematic diagram of the structure of multiple hollow cold plates of the present invention; Figure 5 This is a schematic diagram of the heat recovery mechanism of the present invention; The diagram is labeled as follows: 1. Rotor; 11. Dehumidification zone; 12. Regeneration zone; 31. Hollow cold plate; 32. Inlet baffle; 33. Outlet baffle; 34. Inlet pipe; 35. Return inlet; 36. Outlet pipe; 37. Return outlet; 38. Condensation channel; 41. Shell; 42. Heat recovery hollow plate; 43. Heat recovery inlet end; 44. Heat recovery outlet end; 45. Center end; 46. Outer end; 47. Vortex channel; 51. Manifold; 52. Exhaust pipe; 53. First return pipe; 54. Second return pipe; 55. Heat recovery inlet pipe; 56. Heat recovery outlet pipe; 57. Three-way valve; 58. Electrically controlled proportional valve. Detailed Implementation

[0016] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention.

[0017] The technical solution adopted in this invention is as follows: Figure 1 As shown, a heat recovery type rotary dehumidifier with controllable temperature includes a rotary wheel 1. The rotary wheel 1 includes a dehumidification zone 11 and a regeneration zone 12. The regeneration zone 12 is equipped with a heater. It also includes a condensation mechanism, a heat recovery mechanism, and a gas guiding system. The condensation mechanism is installed at the air outlet of the regeneration zone 12 and is configured to bring the high-temperature, high-humidity gas discharged from the air outlet of the regeneration zone 12 to its dew point temperature. The heat recovery mechanism is installed at the air inlet of the heater and is configured to recover the high-temperature gas discharged from the condensation mechanism, thus providing preliminary heating to the low-temperature gas entering the heater. The gas guiding system is used to guide the gas flow as needed. The guiding operation of the gas guiding system includes: Airflow diversion operation 1: Guide the dry gas from the air outlet of dehumidification zone 11 to be discharged; Second diversion operation: guide the dry gas at the air outlet of dehumidification zone 11 into the condensation mechanism, and after the dry gas participates in heat exchange, it forms high-temperature gas, which is then guided to the air outlet of dehumidification zone 11 for discharge. Flow guidance operation 3: Guide the dry gas from the air outlet of dehumidification zone 11 into the condensation mechanism, and after the dry gas participates in heat exchange, the high-temperature gas is guided to the heat recovery mechanism for secondary heat exchange to form low-temperature dry gas; the low-temperature dry gas is then guided to the air outlet of dehumidification zone 11 for discharge.

[0018] In one embodiment, reference Figures 1-2 As shown, the gas guiding system includes a manifold 51, an exhaust pipe 52, a first return pipe 53, a second return pipe 54, a heat recovery inlet pipe 55, and a heat recovery outlet pipe 56. The manifold 51 is installed in a covering manner at the air outlet of the dehumidification zone 11 to receive the dry gas discharged from the air outlet of the dehumidification zone 11. One end of the exhaust pipe 52 is connected to the air outlet of the manifold 51, and the other end is used to discharge the dry gas, or it can be connected to one end of the first return pipe 53 through a valve. The other end of the first return pipe 53 is connected to the return inlet 35 of the condensing mechanism. One end of the second return pipe 54 is connected to the return outlet 37 of the condensing mechanism, and the other end is connected to the exhaust pipe 52, or it can be connected to one end of the heat recovery inlet pipe 55 through a valve. The other end of the heat recovery inlet pipe 55 is connected to the return inlet 35 of the heat recovery mechanism. The return outlet 37 of the heat recovery mechanism is connected to the exhaust pipe 52 through the heat recovery outlet pipe 56. Figure 1 For example, the specific traffic redirection operations are as follows: For the first diversion operation, the gas to be dehumidified enters from the left side of the rotor 1, and after being dehumidified in the dehumidification zone 11 of the rotor 1, it flows into the manifold 51. The function of the manifold 51 is to collect all the dehumidified dry gas discharged from the air outlet of the dehumidification zone 11. After the dry gas is gathered by the manifold 51, it flows into the exhaust pipe 52 and is discharged from the other end of the exhaust pipe 52. For the second flow diversion operation: The gas to be dehumidified enters from the left side of the rotor 1, passes through the dehumidification zone 11 of the rotor 1 for dehumidification, and then flows into the manifold 51. The function of the manifold 51 is to collect all the dehumidified dry gas discharged from the outlet of the dehumidification zone 11. After being gathered by the manifold 51, the dry gas flows into the exhaust pipe 52. At this time, an electrically controlled three-way valve 57 is installed on the exhaust pipe 52, one of which is connected to the first return pipe 53. Through the control of the electrically controlled three-way valve 57, all or part of the dry gas can be guided into the first return pipe 53, and then flow into the first return pipe 53. A return pipe 53 enters the condensation mechanism to participate in the condensation operation, condensing and dehumidifying the high-temperature and high-humidity gas discharged from the regeneration zone 12, removing a large amount of humidity from the gas discharged from the regeneration zone 12, and at the same time recovering the heat of the high-temperature and high-humidity gas through heat exchange; the high-temperature and dry gas after heat exchange enters the second return pipe 54, through which the high-temperature gas is returned to the exhaust pipe 52; wherein, as shown in Reference 1, an air pump / fan or other equipment can be installed in the middle section of the first return pipe 53 and the second return pipe 54 to better guide the flow of gas. For the third diversion operation; based on the second diversion operation, the high-temperature dry gas entering the second return pipe 54 can also enter the heat recovery mechanism through the heat recovery inlet pipe 55 to undergo secondary heat exchange to form low-temperature dry gas. The low-temperature dry gas flows through the heat recovery outlet pipe 56 to the air outlet of the dehumidification zone 11 and is discharged.

[0019] Furthermore, in this embodiment, reference is made to... Figure 1 As shown above, based on the above, an electrically controlled proportional valve 58 is installed at the connection between the exhaust pipe 52 and the first return pipe 53, the thermal connection between the second return pipe 54 and the exhaust pipe 52, and the thermal connection between the heat recovery outlet pipe 56 and the exhaust pipe 52. The electrically controlled proportional valve 58 is used to control the flow rate of different flow directions in the corresponding pipes. This allows one or more of the following gases to be mixed: the dry gas discharged from the exhaust pipe 52 at the outlet of the dehumidification zone 11, the low-temperature dry gas discharged from the heat recovery mechanism, and the high-temperature gas discharged from the condensation mechanism. Dry gases of different temperatures and flow rates can be mixed to discharge dry gas at a suitable temperature as needed.

[0020] In one embodiment, reference Figure 3 As shown, the condensation mechanism includes several hollow cold plates 31, an inlet baffle 32, and an outlet baffle 33. The top of each hollow cold plate 31 is connected to the return inlet 35 of the condensation mechanism through an inlet pipe 34 to receive dry gas transported from the first return pipe 53. The bottom of each hollow cold plate 31 is connected to the return outlet 37 of the condensation mechanism through an outlet pipe 36 to transport high-temperature gas into the second return pipe 54. The inlet baffle 32 is installed at the inlet end of the condensation mechanism, and the outlet baffle 33 is installed at the outlet end of the condensation mechanism. The inlet baffle 32 and the outlet baffle 33 form an S-channel, guiding the dry gas to enter from the bottom of the hollow cold plate 31 and exit from the top of the hollow cold plate 31.

[0021] During the condensation process, the high-temperature and high-humidity gas passing through the regeneration zone 12 enters the condensation mechanism and flows downward along the inlet baffle 32 until it reaches the bottom of each hollow cold plate 31. Then, it flows upward along the gaps between the hollow cold plates 31. At the same time, the dry gas enters the top of each hollow cold plate 31 from the outlet baffle 33 and then flows downward along the hollow cold plate 31 to exchange heat with the upward-flowing high-temperature and high-humidity gas, reaching the dew point. The high-temperature and high-humidity gas begins to condense into water on the surface of each hollow cold plate 31. A drawer-type water collection box is installed on the top of each hollow cold plate 31 to collect the condensate sliding down the hollow cold plate 31. The dry gas after heat exchange flows from the outlet pipe 36 at the bottom of each hollow cold plate 31 into the second return pipe 54. The low-temperature and low-humidity gas after heat exchange flows from the top of each hollow cold plate 31 into the outlet baffle 33 and is discharged from the exhaust port on one side of the outlet baffle 33. In another embodiment, reference Figure 4 As shown, each hollow cold plate 31 has an arc-shaped structure, and a wave-shaped condensation channel 38 is formed between the connected hollow cold plates 31 in the vertical direction; this further improves the heat exchange effect, traps more moisture to condense into water for collection, and recovers more heat for subsequent work, thereby maximizing resource utilization.

[0022] In one embodiment, reference Figure 2 and Figure 5 As shown, the heat recovery mechanism includes a housing 41, a heat recovery hollow plate 42, a heat recovery inlet end 43, and a heat recovery outlet end 44. The heat recovery hollow plate 42 is installed inside the housing 41, with one end connected to the heat recovery inlet pipe 55 and the other end connected to the heat recovery outlet pipe 56. The heat recovery inlet end 43 is used to guide the regeneration gas into the housing and into contact with the heat recovery hollow plate 42. The heat recovery outlet end 44 is used to guide the gas that has undergone heat exchange into the heater.

[0023] refer to Figure 5 As shown, the heat recovery hollow plate 42 has a vortex structure. The central end 45 of the vortex structure heat recovery hollow plate 42 is connected to the heat recovery air inlet pipe 55, and the outer end 46 of the vortex structure heat recovery hollow plate 42 is connected to the heat recovery air outlet pipe 56. The vortex structure heat recovery hollow plate 42 forms a vortex channel 47 in the shell 41. The heat recovery air inlet end 43 is connected to the center of the vortex channel 47, and the vortex channel 47 is connected to the outer periphery. It is configured to guide the regeneration gas from the center of the vortex channel 47 along the vortex channel 47 to the periphery and then enter the heater through the heat recovery air outlet end 44.

[0024] During the heat recovery process, the high-temperature dry gas entering through the heat recovery inlet pipe 55 enters the heat recovery hollow plate 42 from the center end 45 of the vortex structure. It then flows in a vortex within the heat recovery hollow plate 42 and is output from the outermost end of the heat recovery hollow plate 42 to the heat recovery outlet pipe 56. During this process, the gas used for the operation of the regeneration zone 12 entering through the heat recovery inlet end 43 enters the central part of the vortex channel 47 and then flows in a vortex along the vortex channel 47. After exchanging heat with the high-temperature dry gas in the vortex flow, it enters the heat recovery outlet end 44 through the outermost part of the vortex channel 47 and enters the heat recovery outlet end 44, thus realizing the preheating operation of the gas.

[0025] The embodiments of the present invention have been described in detail above with reference to the examples. However, the present invention is not limited to the above embodiments. For those skilled in the art, after learning the contents described in the present invention, several equivalent changes and substitutions can be made without departing from the principle of the present invention. These equivalent changes and substitutions should also be considered to fall within the protection scope of the present invention.

Claims

1. A heat recovery type rotary dehumidifier with controllable temperature, comprising a rotary wheel, the rotary wheel including a dehumidification zone and a regeneration zone, the regeneration zone being equipped with a heater, characterized in that: Also includes: A condensing mechanism is installed at the air outlet of the regeneration zone, and the condensing mechanism is configured to bring the high-temperature and high-humidity gas discharged from the air outlet of the regeneration zone to the dew point temperature. A heat recovery mechanism is installed at the air inlet of the heater. The heat recovery mechanism is configured to recover the high-temperature gas discharged from the condensation mechanism and to preheat the low-temperature gas to be introduced into the heater. The gas diversion system shall at least perform the following diversion operations: Airflow guidance operation 1: Guide the dry gas from the air outlet of the dehumidification zone to be discharged; Second diversion operation: guide the dry gas at the air outlet of the dehumidification zone into the condensation mechanism, and after the dry gas participates in heat exchange, it forms high-temperature gas, which is then guided to the air outlet of the dehumidification zone for discharge. Flow guidance operation 3: Guide the dry gas from the dehumidification zone outlet into the condensation mechanism, and after the dry gas participates in heat exchange, the high-temperature gas is guided to the heat recovery mechanism for secondary heat exchange to form low-temperature dry gas; the low-temperature dry gas is then guided to the dehumidification zone outlet for discharge.

2. The heat recovery type rotary dehumidifier with controllable temperature according to claim 1, characterized in that: The gas guiding system includes a manifold, an exhaust pipe, a first return pipe, a second return pipe, a heat recovery inlet pipe, and a heat recovery outlet pipe. The manifold is installed in a covering manner at the outlet of the dehumidification zone to receive the dry gas discharged from the outlet of the dehumidification zone. One end of the exhaust pipe is connected to the outlet of the manifold, and the other end is used to discharge the dry gas, or connected to one end of the first return pipe through a valve. The other end of the first return pipe is connected to the return inlet of the condensation mechanism. One end of the second return pipe is connected to the return outlet of the condensation mechanism, and the other end is connected to the exhaust pipe, or connected to one end of the heat recovery inlet pipe through a valve. The other end of the heat recovery inlet pipe is connected to the return inlet of the heat recovery mechanism, and the return outlet of the heat recovery mechanism is connected to the exhaust pipe through the heat recovery outlet pipe.

3. The heat recovery type rotary dehumidifier with controllable temperature according to claim 2, characterized in that: An electrically controlled proportional valve is installed at the connection between the exhaust pipe and the first return pipe, the thermal connection between the second return pipe and the exhaust pipe, and the thermal connection between the heat recovery outlet pipe and the exhaust pipe. The electrically controlled proportional valve is used to control the flow rate of different flow directions in the corresponding pipe.

4. The heat recovery type rotary dehumidifier with controllable temperature according to claim 3, characterized in that: The exhaust duct discharges one or more of the following gases: dry gas discharged from the outlet of the dehumidification zone, a mixture of low-temperature dry gas discharged from the heat recovery mechanism, and high-temperature gas discharged from the condensation mechanism.

5. The heat recovery type rotary dehumidifier with controllable temperature according to claim 2, characterized in that: The condensation mechanism includes: Several hollow cold plates, each with its top connected to the reflux inlet of the condensing mechanism via an air inlet pipe to receive dry gas delivered from the first reflux pipe, and each with its bottom connected to the reflux outlet of the condensing mechanism via an air outlet pipe to deliver high-temperature gas into the second reflux pipe. An intake baffle is installed at the intake end of the condenser mechanism; An exhaust baffle is installed at the exhaust end of the condensation mechanism; The inlet baffle and outlet baffle form an S-channel, which guides the dry gas to enter from the bottom of the hollow cold plate and exit from the top of the hollow cold plate.

6. The heat recovery type rotary dehumidifier with controllable temperature according to claim 5, characterized in that: Each of the hollow cold plates has an arc-shaped structure, and a wave-shaped condensation channel is formed between the connected hollow cold plates in the vertical direction.

7. A heat recovery type rotary dehumidifier with controllable temperature according to claim 5 or 6, characterized in that: Each of the hollow cold plates is equipped with a drawer-type water collection box on its top to receive condensate that slides down the hollow cold plate.

8. The heat recovery type rotary dehumidifier with controllable temperature according to claim 2, characterized in that: The heat recovery mechanism includes: case; A heat recovery hollow plate is installed inside the housing. One end of the heat recovery hollow plate is connected to the heat recovery air inlet pipe, and the other end is connected to the heat recovery air outlet pipe. The heat recovery inlet is used to guide the regeneration gas into the outer casing and to contact the heat recovery hollow plate. The heat recovery outlet is used to guide the gas that has undergone heat exchange into the heater.

9. A heat recovery type rotary dehumidifier with controllable temperature according to claim 8, characterized in that: The heat recovery hollow plate has a vortex structure. The central end of the vortex-shaped heat recovery hollow plate is connected to the heat recovery air inlet pipe, and the outer end of the vortex-shaped heat recovery hollow plate is connected to the heat recovery air outlet pipe.

10. A heat recovery type rotary dehumidifier with controllable temperature according to claim 9, characterized in that: The heat recovery hollow plate with a vortex structure forms a vortex channel inside the shell. The heat recovery air inlet is connected to the center of the vortex channel, and the vortex channel is connected to the periphery of the vortex channel. It is configured to guide the regeneration gas from the center of the vortex channel along the vortex channel to the periphery and then enter the heater through the heat recovery air outlet.

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