Fresh air dehumidification device

Abstract

The invention provides a fresh air dehumidification device. Comprising a dehumidification assembly which comprises a solution dehumidification part and a rotating wheel dehumidification part which are both used for dehumidifying introduced to-be-dehumidified air; the regeneration assembly comprises a ventilation part and a heat exchange part which are used for introducing air into the to-be-regenerated part of the dehumidification assembly, so that moisture of the to-be-regenerated part is taken away by the air; the heat exchange part is used for exchanging heat with air or at least part of the to-be-regenerated part; the heat pump structure comprises a compressor, a cooler, a throttling element and an evaporator which are sequentially connected, the cooler is provided with a first discharge port used for discharging a heating medium, and the evaporator is provided with a second discharge port used for discharging a refrigerating medium; the first discharge port is communicated with the heat exchange part; and the second discharge port is communicated with the solution dehumidification part. By means of the technical scheme, the problem that in the prior art, energy consumption of a fresh air dehumidification device is large can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of dehumidification devices, and in particular to a fresh air dehumidification device. Background Art

[0002] Currently, fresh air dehumidification systems often use rotary dehumidifiers to dehumidify fresh air. The fresh air to be treated comes into direct contact with the solid moisture-absorbing material in the rotary dehumidification zone, achieving near-isenthalpic dehumidification. After absorbing moisture, the rotary dehumidifier is typically regenerated and dehydrated using high-temperature air.

[0003] However, the regeneration heat of the rotor after moisture absorption is generally taken from a high-temperature heat source such as steam or electricity, and the required air temperature is relatively high, resulting in high regeneration energy consumption. There are also schemes in the prior art that use dehumidification solutions to dehumidify fresh air. Solution dehumidification utilizes direct contact between the dehumidification solution and the air to absorb moisture from the air, and regenerates the dehumidification solution through the heat generated by the heat pump system. However, due to limitations such as solution concentration, the dehumidification capacity of the solution dehumidification method is limited and cannot reach the dehumidification capacity of the rotor dehumidification method, resulting in insufficient dehumidification depth for the fresh air. Therefore, the energy consumption of the rotor dehumidification method alone is relatively high, while the dehumidification depth of the solution dehumidification method alone is insufficient. Summary of the Invention

[0004] The main purpose of the present invention is to provide a fresh air dehumidification device to solve the problem of high energy consumption of fresh air dehumidification devices in the prior art.

[0005] In order to achieve the above object, the present invention provides a fresh air dehumidification device, comprising:

[0006] The dehumidification component includes a solution dehumidification part and a rotary dehumidification part, both of which are used to dehumidify the incoming air to be dehumidified;

[0007] The regeneration assembly includes a ventilation portion for introducing air into the portion to be regenerated of the dehumidification assembly and a heat exchange portion for allowing the air to remove moisture from the portion to be regenerated; the heat exchange portion is used to exchange heat with the air or at least a portion of the portion to be regenerated;

[0008] The heat pump structure includes a compressor, a cooler, a throttling device and an evaporator connected in sequence. The cooler has a first discharge port for discharging a heating medium, and the evaporator has a second discharge port for discharging a refrigerant medium; the first discharge port is connected to the heat exchange part; and the second discharge port is connected to the solution dehumidification part.

[0009] Furthermore, the solution dehumidification unit has a dehumidification chamber and a solution dehumidification air inlet and a solution dehumidification air outlet connected to the dehumidification chamber, and the dehumidification chamber is used to accommodate the dehumidification solution;

[0010] The rotary dehumidification part is provided with a moisture absorbing material, and the rotary dehumidification part has a rotary dehumidification air inlet and a rotary dehumidification air outlet; the solution dehumidification air outlet is communicated with the rotary dehumidification air inlet.

[0011] Furthermore, the evaporator also has a first reflux port; the solution dehumidification unit includes:

[0012] A dehumidification tower having a first air inlet for introducing air to be dehumidified and a first liquid inlet for introducing a dehumidification solution;

[0013] The solution cooler has a first solution flow path and a first medium flow path. The outlet of the first solution flow path is connected to the first liquid inlet, and the second outlet and the first reflux port are both connected to the first medium flow path. The first medium flow path is used to cool the first solution flow path.

[0014] Furthermore, the evaporator further comprises a first reflux port; and the dehumidification assembly further comprises:

[0015] A pre-cooling dehumidifier, the pre-cooling dehumidifier having a pre-cooling dehumidification air inlet and a pre-cooling dehumidification air outlet for introducing air to be dehumidified, the pre-cooling dehumidification air outlet being connected to the solution dehumidification air inlet;

[0016] The pre-cooling dehumidifier further has a second medium flow path, the second discharge port and the first return port are both connected to the second medium flow path, and the second medium flow path is used to cool the air to be dehumidified passing through the pre-cooling dehumidifier.

[0017] Furthermore, the regeneration component includes:

[0018] an air heater, the air heater having a third medium flow path, the third medium flow path being connected to the first discharge port;

[0019] Among them, the air heater also has an air heating inlet and an air heating outlet for passing air. The air heating outlet is connected to at least part of the rotary dehumidifier. At least part of the rotary dehumidifier forms a regeneration section so that the hot air formed by heat exchange with the heating medium passes through at least part of the rotary dehumidifier and takes away moisture.

[0020] Furthermore, the cooler also has a second reflux port; the regeneration component also includes:

[0021] The solution heater comprises a second solution flow path and a fourth medium flow path, wherein the second solution flow path is used to introduce the solution to be regenerated; the inlet of the fourth medium flow path is connected to the outlet of the third medium flow path, and the outlet of the fourth medium flow path is connected to the second reflux port;

[0022] The regeneration tower has a second air inlet for introducing air and a second liquid inlet for introducing the solution to be regenerated. The outlet of the second solution flow path is connected to the second liquid inlet so that the air can exchange heat with the hot solution formed by heat exchange between the solution to be regenerated and the heating medium and take away the moisture of the hot solution.

[0023] Furthermore, the fresh air dehumidification device also includes:

[0024] The connecting pipeline and the first heat recovery device, one end of the connecting pipeline is connected to the dehumidification chamber of the solution dehumidification part, and the other end is connected to the regeneration tower. The first heat recovery device is arranged on the connecting pipeline and is used for heat exchange with the dehumidification solution flowing in the connecting pipeline.

[0025] Furthermore, the cooler comprises:

[0026] a first cooler, wherein a refrigerant inlet of the first cooler is connected to a refrigerant outlet of the compressor; the first cooler comprises a first refrigerant flow path and a heating medium flow path for heat exchange with each other, and an outlet of the heating medium flow path forms a first discharge port;

[0027] a second cooler, wherein the refrigerant inlet of the second cooler is connected to the refrigerant outlet of the first cooler; and the second cooler has a second refrigerant flow path and a cooling medium flow path for mutual heat exchange;

[0028] A cooling tower has a cooling medium in its cooling chamber, and the cooling chamber is connected to a cooling medium flow path.

[0029] Furthermore, the heat pump structure also includes:

[0030] The second heat recovery device, the refrigerant outlet of the second cooler is connected to the second heat recovery device, and the refrigerant outlet of the evaporator is connected to the second heat recovery device.

[0031] Furthermore, the heat pump structure has a refrigerant filling port, and the refrigerant filling port is used to introduce carbon dioxide; and / or,

[0032] The cooler has a first medium filling port, and the first medium filling port is used to introduce water; and / or,

[0033] The evaporator has a second medium filling port, which is used for introducing water.

[0034] By applying the technical solution of the present invention, by combining the solution dehumidification section and the rotary dehumidification section, the air can be deeply dehumidified to achieve a lower dew point temperature. At the same time, the efficient heat energy conversion of the heat pump structure significantly reduces the overall energy consumption in the dehumidification process. The heat exchange part in the regeneration component is connected to the first discharge port of the cooler, and the heating medium is used to heat the air or the part to be regenerated, thereby achieving regeneration of the part to be regenerated, reducing dependence on high-temperature heat sources, thereby reducing the energy consumption of the regeneration process and improving overall energy efficiency. By directly connecting the second discharge port of the evaporator to the solution dehumidification section, direct cooling of the dehumidification solution by the refrigerant medium is achieved, the solution dehumidification efficiency is optimized, and the stability and synergy of the rotary dehumidification and solution regeneration processes are ensured. Therefore, the technical solution of the present invention can solve the problem of high energy consumption of fresh air dehumidification devices in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0036] Figure 1 A schematic structural diagram of a dehumidification component and a regeneration component provided in an embodiment of the present invention is shown;

[0037] Figure 2 A schematic structural diagram of a heat pump structure provided according to an embodiment of the present invention is shown.

[0038] The above drawings include the following reference numerals:

[0039] 1. Heat pump structure; 11. Compressor; 12. Cooler; 121. First cooler; 1211. First discharge outlet; 1212. Second return outlet; 122. Second cooler; 13. Throttle; 14. Evaporator; 141. Second discharge outlet; 142. First return outlet; 15. Cooling tower; 16. Second heat recovery device; 21. Dehumidification assembly; 211. Solution dehumidification unit; 2111. Solution dehumidification air inlet; 2112. Solution dehumidification air outlet; 2113. Solution cooler; 2114. Dehumidification tower; 2115. First liquid inlet; 2116. First solution inlet; 2117. First solution outlet; 2118. First medium inlet; 2119. First medium outlet; 212. Rotary dehumidification unit; 2121. Rotary dehumidification air inlet; 21 22. Rotary dehumidification outlet; 213. Pre-cooling dehumidifier; 2131. Pre-cooling dehumidification air inlet; 2132. Pre-cooling dehumidification air outlet; 2133. Second medium inlet; 2134. Second medium outlet; 214. Connecting pipe; 215. First heat recovery device; 22. Regeneration component; 221. Air heater; 2211. Third medium inlet; 2212. Third medium outlet; 2213. Air heating air inlet; 2214. Air heating air outlet; 2221. Solution heater; 2222. Regeneration tower; 2223. Second solution inlet; 2224. Second solution outlet; 2225. Fourth medium inlet; 2226. Fourth medium outlet; 2227. Second air inlet; 2228. Second liquid inlet; 3. First pump body; 4. Second pump body. DETAILED DESCRIPTION

[0040] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] like Figure 1 and Figure 2As shown, an embodiment of the present invention provides a fresh air dehumidification device, which includes a dehumidification component 21, a regeneration component 22 and a heat pump structure 1. The dehumidification component 21 includes a solution dehumidification part 211 and a rotary dehumidification part 212, both of which are used to dehumidify the air to be dehumidified. The regeneration component 22 includes a ventilation part and a heat exchange part for introducing air into the part to be regenerated of the dehumidification component 21, so that the air takes away the moisture in the part to be regenerated; the heat exchange part is used for heat exchange with the air or at least part of the part to be regenerated. The heat pump structure 1 includes a compressor 11, a cooler 12, a throttling device 13 and an evaporator 14 connected in sequence, the cooler 12 has a first discharge port 1211 for discharging a heating medium, and the evaporator 14 has a second discharge port 141 for discharging a refrigerant medium; the first discharge port 1211 is connected to the heat exchange part; the second discharge port 141 is connected to the solution dehumidification part 211.

[0042] The fresh air dehumidification device provided by the embodiment of the present invention can deeply dehumidify the air by combining the solution dehumidification section 211 and the rotary dehumidification section 212 to achieve a lower dew point temperature. At the same time, the overall energy consumption in the dehumidification process is significantly reduced through the efficient heat energy conversion of the heat pump structure 1. The heat exchange part in the regeneration component 22 is connected to the first discharge port 1211 of the cooler 12, and the air or the part to be regenerated is heated by the heating medium, thereby achieving the regeneration of the part to be regenerated, reducing the dependence on the high-temperature heat source, thereby reducing the energy consumption of the regeneration process and improving the overall energy efficiency. By directly connecting the second discharge port 141 of the evaporator 14 to the solution dehumidification section 211, direct cooling of the dehumidification solution by the refrigerant medium is achieved, the solution dehumidification efficiency is optimized, and the stability and synergy of the rotary dehumidification and solution regeneration processes are ensured. Therefore, the fresh air dehumidification device provided by this embodiment can solve the problem of high energy consumption of the fresh air dehumidification device in the prior art.

[0043] It should be noted that the solution dehumidifier 211 utilizes direct contact between the dehumidifying solution and the fresh air to absorb moisture from the fresh air. The regeneration section of the solution dehumidifier 211 is the dehumidifying solution diluted after the solution dehumidifier 211 absorbs moisture from the fresh air. The rotor dehumidifier 212 absorbs moisture from the fresh air through direct contact between the solid hygroscopic material provided on the rotor dehumidifier 212. The regeneration section of the rotor dehumidifier 212 is the area where the rotor dehumidifier 212 absorbs moisture from the fresh air.

[0044] Specifically, the regeneration component 22 includes a solution dehumidification regeneration part and a rotor dehumidification regeneration part. For the solution dehumidification regeneration part, the heat exchange part exchanges heat with at least part of the part to be regenerated, that is, the heat exchange part exchanges heat with the dehumidification solution that is diluted after absorbing moisture in the fresh air to form a hot solution. The hot solution contacts and exchanges heat with the air so that the moisture in the hot solution is carried away by the air, thereby realizing the regeneration of the dehumidification solution.

[0045] Specifically, the regeneration component 22 includes a solution dehumidification regeneration part and a rotary dehumidification regeneration part. For the rotary dehumidification regeneration part, the heat exchange part exchanges heat with the air to form hot air. The hot air contacts and exchanges heat with the area of ​​the rotary dehumidification part 212 that absorbs moisture, so that the moisture in the area of ​​the rotary dehumidification part 212 that absorbs moisture is taken away by the hot air, thereby realizing the regeneration of the rotary dehumidification part 212.

[0046] Specifically, the ventilation part also includes a solution dehumidification and regeneration part and a rotor dehumidification and regeneration part, and the air introduced into the solution dehumidification and regeneration part and the air introduced into the rotor dehumidification and regeneration part are independent of each other.

[0047] Specifically, the throttling element 13 is an electronic expansion valve.

[0048] Specifically, the cooler 12 has a first refrigerant flow path and a heating medium flow path. The first refrigerant flow path exchanges heat with the heating medium flow path to heat the medium with the high-temperature refrigerant to form a heating medium.

[0049] Specifically, the evaporator 14 has a second refrigerant flow path and a refrigeration medium flow path. The second refrigerant flow path exchanges heat with the refrigeration medium flow path to cool the medium with the low-temperature refrigerant to form a refrigeration medium.

[0050] Specifically, both the refrigerant medium and the heating medium are water. The refrigerant circulating in the heat pump structure 1 is carbon dioxide. In this way, water, as a cooling / heating medium, has a high heat capacity and stable heat transfer performance, which can ensure that the heat conversion and transfer within the system are more efficient and stable. The use of water medium avoids the safety risks that may be caused by the use of other chemical media. At the same time, compared with traditional Freon refrigerants, carbon dioxide has an extremely low global warming potential (GWP) and zero ozone depletion potential (ODP), which greatly reduces the impact on the environment.

[0051] In one embodiment, the solution dehumidification unit 211 includes a dehumidification chamber, a solution dehumidification air inlet 2111, and a solution dehumidification air outlet 2112 connected to the dehumidification chamber. The dehumidification chamber is used to accommodate a dehumidifying solution. The rotary dehumidification unit 212 is provided with a hygroscopic material and includes a rotary dehumidification air inlet 2121 and a rotary dehumidification air outlet 2122. The solution dehumidification air outlet 2112 is connected to the rotary dehumidification air inlet 2121. With this structural arrangement, fresh air first passes through the solution dehumidification unit 211, enters the dehumidification chamber via the solution dehumidification air inlet 2111, fully contacts the dehumidification solution, and removes some of its moisture. Air exiting the liquid dehumidification outlet 2112 then enters the rotary dehumidifier 212. Air passes through the rotary dehumidifier inlet 2121, where it undergoes deep, near-isotropic dehumidification using the hygroscopic material on the rotor. This ensures that the fresh air delivered meets the required extremely low dew point and humidity. Liquid dehumidifier 211 pre-removes a significant amount of moisture from the fresh air, reducing the burden on the rotary dehumidifier 212.

[0052] Specifically, the dehumidifying solution may be a desiccant solution capable of absorbing moisture, such as a lithium chloride solution, a calcium chloride solution, or a lithium bromide solution.

[0053] Specifically, the hygroscopic material can be a solid hygroscopic material capable of absorbing moisture, such as molecular sieve, silica gel, lithium chloride coating, etc.

[0054] In one embodiment, the evaporator 14 further comprises a first reflux port 142. The solution dehumidification unit 211 includes a dehumidification tower 2114 and a solution cooler 2113. The dehumidification tower 2114 comprises a first air inlet for admitting the air to be dehumidified and a first liquid inlet 2115 for admitting the dehumidifying solution. The solution cooler 2113 comprises a first solution flow path and a first medium flow path. The outlet of the first solution flow path is connected to the first liquid inlet 2115. The second outlet 141 and the first reflux port 142 are both connected to the first medium flow path, which is used to cool the first solution flow path. This structural arrangement ensures a stable supply of refrigerant, thereby enabling precise control of the temperature of the dehumidifying solution. The temperature of the solution directly affects its moisture absorption capacity. By cooling the first solution flow path of the solution cooler 2113, the dehumidifying solution can be maintained in an optimal moisture absorption state, improving dehumidification efficiency and depth.

[0055] Specifically, the first air inlet forms the solution dehumidification air inlet 2111.

[0056] Specifically, the solution cooler 2113 has a first solution inlet 2116 and a first solution outlet 2117 for introducing the dehumidifying solution. The first solution outlet 2117 is connected to the first liquid inlet 2115. The solution cooler 2113 also has a first medium inlet 2118 and a first medium outlet 2119. The first medium inlet 2118 is connected to the second discharge port 141, and the first medium outlet 2119 is connected to the first reflux port 142, so that the refrigerant medium can cool the dehumidifying solution. With this structural arrangement, the dehumidifying solution enters the solution cooler 2113 through the first solution inlet 2116, flows through the first solution flow path and is cooled, and then flows out at the first solution outlet 2117, directly connecting to the first liquid inlet 2115 of the dehumidifying tower 2114. This design ensures that the dehumidifying solution operates at an optimal temperature, improving its moisture absorption capacity.

[0057] Specifically, if Figure 1 As shown, the dehumidification solution is cooled by cold water in solution cooler 2113 and then sprayed on the top of dehumidification tower 2114. The low-temperature solution and air exchange heat and mass in the packing of dehumidification tower 2114, dehumidifying the air and diluting the solution. After the cold water exchanges heat, it forms cold water return water, which is then circulated back to evaporator 14 for cooling.

[0058] In one embodiment, the evaporator 14 further includes a first return port 142. The dehumidification assembly 21 further includes a pre-cooling dehumidifier 213, which includes a pre-cooling dehumidification inlet 2131 and a pre-cooling dehumidification outlet 2132 for admitting air to be dehumidified. The pre-cooling dehumidification outlet 2132 is connected to the solution dehumidification inlet 2111. The pre-cooling dehumidifier 213 further includes a second medium flow path, with the second outlet 141 and the first return port 142 both connected to the second medium flow path. The second medium flow path is used to cool the air to be dehumidified passing through the pre-cooling dehumidifier 213. With this structural arrangement, the pre-cooling dehumidifier 213 receives fresh air to be processed through its pre-cooling dehumidification inlet 2131 and then uses the refrigerant circulating in the second medium flow path (via the second outlet 141 and the first return port 142) to initially cool and dehumidify the air. This step significantly improves the efficiency of the subsequent dehumidification process.

[0059] Specifically, the pre-cooling dehumidifier 213 has a second medium inlet 2133 and a second medium outlet 2134. The second medium inlet 2133 is connected to the second outlet 141, and the second medium outlet 2134 is connected to the first return port 142, allowing the refrigerant medium to cool the air to be dehumidified. With this structural arrangement, the refrigerant medium enters the second medium flow path of the pre-cooling dehumidifier 213 through the second medium inlet 2133, cooling the air to be dehumidified entering through the pre-cooling dehumidification air inlet 2131. Pre-cooling dehumidification not only removes some moisture from the air but also lowers the air temperature, creating favorable conditions for subsequent deep dehumidification.

[0060] In one embodiment, the regeneration assembly 22 includes an air heater 221 having a third medium flow path that communicates with the first outlet 1211. The air heater 221 also has an air heating inlet 2213 for admitting air and an air heating outlet 2214. The air heating outlet 2214 communicates with at least a portion of the rotary dehumidifier 212, which forms a waiting-for-regeneration section. This allows hot air generated by heat exchange with the heating medium to pass through at least a portion of the rotary dehumidifier 212, removing moisture. With this structural arrangement, the air heater 221 is connected to the first outlet 1211 via its third medium flow path, allowing the heating medium to be directly introduced into this flow path to heat the circulating air. This heat exchange process ensures that the air is heated to a suitable regeneration temperature, effectively driving the subsequent moisture removal process. The hot air discharged from the air heating outlet 2214 of the air heater 221 directly contacts the part to be regenerated of the rotary dehumidifier 212, and the high-temperature air is used to remove the moisture in the rotary wheel, thereby achieving efficient moisture removal.

[0061] Specifically, the air heater 221 has a third medium inlet 2211 and a third medium outlet 2212. The third medium inlet 2211 is connected to the first outlet 1211. Thus, the heating medium introduced through the third medium inlet 2211 can be precisely temperature-controlled, thereby efficiently heating the air passing through the air heater 221 and providing the necessary heat energy for the subsequent regeneration process of the rotary dehumidifier.

[0062] Specifically, the air heater 221 forms a heat exchange portion, and the air heater 221 is used for heat exchange with the incoming air.

[0063] In one embodiment, the cooler 12 further comprises a second reflux port 1212; the regeneration assembly 22 further comprises a solution heater 2221 and a regeneration tower 2222. The solution heater 2221 comprises a second solution flow path and a fourth medium flow path. The second solution flow path is used to introduce the solution to be regenerated. The inlet of the fourth medium flow path is connected to the outlet of the third medium flow path, and the outlet of the fourth medium flow path is connected to the second reflux port 1212. The regeneration tower 2222 comprises a second air inlet 2227 for introducing air and a second liquid inlet 2228 for introducing the solution to be regenerated. The outlet of the second solution flow path is connected to the second liquid inlet 2228, allowing air to exchange heat with the hot solution formed by heat exchange between the solution to be regenerated and the heating medium, and removing moisture from the hot solution. With this structural arrangement, the energy of the heating medium is utilized in the solution heater 2221 to heat the solution to be regenerated via the fourth medium flow path. Afterwards, the heating medium returns to the cooler 12 through the second reflux port 1212, forming an energy recycling system that significantly improves the coordination and efficiency of energy management. The regeneration tower 2222 introduces air through its second air inlet 2227 and receives hot solution from the second solution flow path through the second liquid inlet 2228. The heat exchange between the air and the hot solution causes the water in the solution to evaporate, which is then carried away by the air, thereby regenerating the solution. By integrating the functions of the air heater 221, the solution heater 2221, and the regeneration tower 2222, as well as the recycling of the heating medium, the system achieves deep integration and optimization.

[0064] It should be emphasized that the configuration of the third medium flow path of the air heater 221 and the fourth medium flow path of the solution heater 2221 fully utilizes the heating medium generated by the heat pump structure 1. The heating medium (high-temperature hot water) produced by the heat pump structure 1 is first applied to the regenerated portion of the rotary dehumidifier 212, which has higher temperature requirements. The hot water that has undergone a heat exchange in the third medium flow path is then passed into the fourth medium flow path and applied to the dehumidification solution to be regenerated. This configuration achieves efficient utilization of the heating medium, making the regeneration of the regenerated portion no longer dependent on high-temperature heat sources such as steam or electricity, and significantly reducing the overall energy consumption of the regeneration device. In one specific embodiment, the temperature of the heating medium flowing out of the heating medium flow path is approximately 80°C, while the temperature of the heating medium flowing out of the third medium flow path and into the fourth medium flow path is approximately 68°C. It can be seen that the regeneration of the regenerated portion can be achieved without the need for a higher-temperature medium.

[0065] Specifically, the solution heater 2221 has a second solution inlet 2223 and a second solution outlet 2224 for admitting the solution to be regenerated. The second solution outlet 2224 is connected to the second liquid inlet 2228. The solution heater 2221 also has a fourth medium inlet 2225 and a fourth medium outlet 2226. The fourth medium inlet 2225 is connected to the third medium outlet 2212, and the fourth medium outlet 2226 is connected to the second reflux port 1212. With this structural arrangement, the solution to be regenerated enters the solution heater 2221 through the second solution inlet 2223. Here, the solution efficiently exchanges heat with the heating medium introduced through the third medium outlet 2212 and connected through the fourth medium inlet 2225. After exchanging heat with the solution, the heating medium is directed through the fourth medium outlet 2226 to the second reflux port 1212 of the cooler 12, completing its circulation path. This circulation mechanism not only maximizes the heat recovery efficiency of the heating medium, reduces energy waste, but also maintains the overall thermal balance of the system.

[0066] Specifically, if Figure 1 As shown, the high-temperature hot water exchanges heat with air in air heater 221, becoming medium-temperature hot water. This water then enters solution heater 2221 to heat the regenerated solution. The resulting high-temperature solution is sprayed on the top of regeneration tower 2222, exchanging heat and mass with the air introduced for solution regeneration through the tower packing. The air removes moisture from the solution, concentrating the solution. After exchanging heat in solution heater 2221, the medium-temperature hot water forms hot water return water, which is then returned to first cooler 121 for circulation and temperature increase.

[0067] In one embodiment, the fresh air dehumidification device further includes a connecting pipe 214 and a first heat recovery device 215. One end of the connecting pipe 214 is connected to the dehumidification chamber of the solution dehumidification unit 211, and the other end is connected to the regeneration tower 2222. The first heat recovery device 215 is disposed on the connecting pipe 214 and is configured to exchange heat with the dehumidification solution flowing within the connecting pipe 214. With this structural arrangement, the connecting pipe 214 connects the dehumidification chamber of the solution dehumidification unit 211 and the regeneration tower 2222, and the first heat recovery device 215 is disposed on this pipe, thereby recovering heat from the dehumidification solution. Heat carried by the solution is recovered by the first heat recovery device 215, reducing the overall heating energy consumption and improving the energy efficiency of the system.

[0068] Specifically, the connecting line 214 includes a first connecting line and a second connecting line. One end of the first connecting line is connected to the solution outlet of the dehumidification tower 2114, and the other end is connected to the solution return inlet of the regeneration tower 2222. The first connecting line is provided with a first pump body 3. The second connecting line has one end connected to the solution outlet of the regeneration tower 2222, and the other end is connected to the solution return inlet of the dehumidification tower 2114. The second connecting line is provided with a second pump body 4. With this structural arrangement, the design of the first and second connecting lines, together with the first and second pump bodies 3 and 4 thereon, ensures the circulation flow between the dehumidification solution and the regeneration solution. This mechanism not only promotes the continuous regeneration of the solution, but also helps maintain the balance of solution concentration by circulating the solution between the two towers, thereby ensuring stable and maximized dehumidification efficiency.

[0069] Specifically, the solution outlet of the dehumidification tower 2114 is also connected to the solution cooler 2113 through the first liquid delivery path. The first pump body 3 is arranged on the first liquid delivery path to provide delivery power for the liquid in the first connecting pipeline and the liquid in the first liquid delivery path.

[0070] Specifically, the solution outlet of the regeneration tower 2222 is also connected to the solution heater 2221 through the second liquid delivery path. The second pump body 4 is arranged on the second liquid delivery path to provide delivery power for the liquid in the second connecting pipeline and the liquid in the second liquid delivery path.

[0071] In one embodiment, the cooler 12 includes a first cooler 121 and a second cooler 122. The refrigerant inlet of the first cooler 121 is connected to the refrigerant outlet of the compressor 11. The first cooler 121 has a first refrigerant flow path and a heating medium flow path for heat exchange with each other, with the outlet of the heating medium flow path forming a first exhaust port 1211. The refrigerant inlet of the second cooler 122 is connected to the refrigerant outlet of the first cooler 121. The second cooler 122 has a second refrigerant flow path and a cooling medium flow path for heat exchange with each other. The cooler 12 also includes a cooling tower 15. The cooling chamber of the cooling tower 15 contains a cooling medium, and the cooling chamber is connected to the cooling medium flow path. With this structural arrangement, the first cooler 121 is connected to the refrigerant outlet of the compressor 11 through its refrigerant inlet, receiving compressed refrigerant. In the first cooler 121, the refrigerant and the heating medium undergo efficient heat exchange in the first refrigerant flow path and the heating medium flow path. This process not only converts the refrigerant's energy into something that can be used for heating, but also outputs the heat through the first outlet 1211, providing a stable heat source for subsequent components (such as the air heater). The second cooler 122 receives the refrigerant from the first cooler 121. The cooling tower 15 is connected to the second cooler 122 via its cooling medium flow path, providing additional cooling capacity and dissipating excess heat in the refrigerant, thereby further improving the efficiency of the heat pump structure 1 and reducing energy consumption.

[0072] In one embodiment, the heat pump structure 1 further includes a second heat recovery unit 16. The refrigerant outlet of the second cooler 122 is connected to the second heat recovery unit 16, and the refrigerant outlet of the evaporator 14 is also connected to the second heat recovery unit 16. With this structural arrangement, the second heat recovery unit 16 can recover excess heat energy from the refrigerant in the second cooler 122 and the evaporator 14. This design reduces the overall energy consumption of the system and improves the economic and environmental performance of the energy conversion process by reusing the heat released during the cooling process.

[0073] Specifically, the heat pump structure 1 has a refrigerant filling port for introducing carbon dioxide. This port facilitates the single-use charging of carbon dioxide refrigerant into the heat pump structure 1. Compared to traditional CFC-based refrigerants, carbon dioxide has an extremely low global warming potential (GWP) and zero ozone depletion potential (ODP), significantly reducing its environmental impact.

[0074] Specifically, the cooler 12 has a first medium filling port for introducing water. This allows water to be filled into the cooler 12 as a heat exchange medium. Water, as a medium, has a high heat capacity and stable heat transfer performance, ensuring more efficient and stable heat conversion and transfer within the system.

[0075] Specifically, the evaporator 14 has a second medium filling port for introducing water. This allows water to be filled into the evaporator 14 as a heat exchange medium. Water, as a medium, has a high heat capacity and stable heat transfer performance, ensuring more efficient and stable heat conversion and transfer within the system.

[0076] Specifically, the precooling dehumidifier 213 is a finned coil heat exchanger. The air heater 221 is a finned coil heat exchanger. The first cooler 121, the second cooler 122, and the evaporator 14 are shell-and-tube heat exchangers or coaxial tube heat exchangers. The cooling tower 15 is an evaporative cooling tower. The solution cooler 2113, the first heat recovery unit 215, and the solution heater 2221 are plate heat exchangers.

[0077] Specifically, the temperature of the cold water discharged from the second outlet 141 is 7°C, and the temperature of the hot water discharged from the first outlet 1211 is 80°C.

[0078] like Figure 1 and Figure 2As shown, the arrows indicate the direction of air flow. The fresh air to be dehumidified passes through pre-cooling and dehumidification (pre-cooling dehumidifier 213), solution dehumidification (solution dehumidification unit 211) and rotary dehumidification (rotary dehumidification unit 212) in sequence to achieve low dew point air supply. A carbon dioxide transcritical heat pump unit (heat pump structure 1) is set up to prepare cold water (refrigeration medium) and hot water (heating medium) at the same time. The cold water is used for pre-cooling, dehumidification and solution dehumidification. Two carbon dioxide gas coolers (the first cooler 121 and the second cooler 122) are set up. The high-temperature section gas cooler (the first cooler 121) prepares high-temperature hot water. The high-temperature hot water is first used for rotor regeneration heating (for air heater 221) to form medium-temperature hot water, and then used for solution regeneration heat source (for solution heater 2221), and then returns to the high-temperature section gas cooler. The excess heat is discharged with the cooling water of the low-temperature section gas cooler (the second cooler 122), thereby reducing the final outlet temperature of carbon dioxide and realizing efficient operation of the carbon dioxide heat pump unit. It fully utilizes the cold and heat in the carbon dioxide transcritical cycle, which is environmentally friendly and efficient.

[0079] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: by increasing the dehumidification of the solution, the dehumidification load of the wheel is reduced, thereby reducing the regeneration demand of the wheel, and making full use of the high-temperature hot water and medium-temperature hot water of the system to meet the needs of the wheel and solution regeneration in turn. The low-temperature section cooler uses cooling water to discharge heat, which can reduce the final outlet temperature of carbon dioxide, thereby realizing efficient operation of the carbon dioxide heat pump system, environmental protection and high efficiency, low operating energy consumption, and significant energy saving and emission reduction benefits.

[0080] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0081] Unless otherwise specified, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. Technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0082] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0083] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0084] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0085] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A fresh air dehumidification device, characterized in that: include: The dehumidification component (21) includes a solution dehumidification part (211) and a rotary dehumidification part (212), both of which are used to dehumidify the air to be dehumidified; The regeneration component (22) comprises a ventilation part and a heat exchange part for introducing air into the part to be regenerated of the dehumidification component (21), so that the air removes moisture from the part to be regenerated; the heat exchange part is used to exchange heat with the air or at least part of the part to be regenerated; A heat pump structure (1) comprises a compressor (11), a cooler (12), a throttling element (13) and an evaporator (14) connected in sequence, wherein the cooler (12) has a first discharge port (1211) for discharging a heating medium, and the evaporator (14) has a second discharge port (141) for discharging a refrigerant medium; the first discharge port (1211) is connected to the heat exchange part; and the second discharge port (141) is connected to the solution dehumidification part (211).

2. The fresh air dehumidification device according to claim 1, characterized in that: The solution dehumidification part (211) comprises a dehumidification cavity and a solution dehumidification air inlet (2111) and a solution dehumidification air outlet (2112) connected to the dehumidification cavity, wherein the dehumidification cavity is used to accommodate the dehumidification solution; The rotary dehumidification section (212) is provided with a hygroscopic material, and the rotary dehumidification section (212) comprises a rotary dehumidification air inlet (2121) and a rotary dehumidification air outlet (2122); the solution dehumidification air outlet (2112) is connected to the rotary dehumidification air inlet (2121).

3. The fresh air dehumidification device according to claim 1, characterized in that: The evaporator (14) further comprises a first reflux port (142); the solution dehumidification unit (211) comprises: a dehumidification tower (2114), the dehumidification tower (2114) having a first air inlet for introducing air to be dehumidified and a first liquid inlet (2115) for introducing a dehumidification solution; A solution cooler (2113) is provided, wherein the solution cooler (2113) has a first solution flow path and a first medium flow path, wherein the outlet of the first solution flow path is connected to the first liquid inlet (2115), the second discharge port (141) and the first reflux port (142) are both connected to the first medium flow path, and the first medium flow path is used to cool the first solution flow path.

4. The fresh air dehumidification device according to claim 2, characterized in that: The evaporator (14) further comprises a first reflux port (142); the dehumidification assembly (21) further comprises: A precooling dehumidifier (213), the precooling dehumidifier (213) having a precooling dehumidification air inlet (2131) and a precooling dehumidification air outlet (2132) for introducing air to be dehumidified, the precooling dehumidification air outlet (2132) being in communication with the solution dehumidification air inlet (2111); The pre-cooling dehumidifier (213) further has a second medium flow path, the second discharge port (141) and the first return port (142) are both connected to the second medium flow path, and the second medium flow path is used to cool the air to be dehumidified passing through the pre-cooling dehumidifier (213).

5. The fresh air dehumidification device according to claim 1, characterized in that: The regeneration component (22) comprises: an air heater (221), the air heater (221) having a third medium flow path, the third medium flow path being in communication with the first discharge port (1211); The air heater (221) further comprises an air heating inlet (2213) and an air heating outlet (2214) for introducing air, the air heating outlet (2214) being connected to at least a portion of the rotary dehumidifier (212), and at least a portion of the rotary dehumidifier (212) forming the to-be-regenerated portion, so that hot air formed by heat exchange with the heating medium passes through at least a portion of the rotary dehumidifier (212) and takes away moisture.

6. The fresh air dehumidification device according to claim 5, characterized in that: The cooler (12) further comprises a second reflux port (1212); the regeneration component (22) further comprises: A solution heater (2221), the solution heater (2221) having a second solution flow path and a fourth medium flow path, the second solution flow path being used to introduce a solution to be regenerated; the inlet of the fourth medium flow path being connected to the outlet of the third medium flow path, and the outlet of the fourth medium flow path being connected to the second reflux port (1212); A regeneration tower (2222) is provided with a second air inlet (2227) for introducing air and a second liquid inlet (2228) for introducing the solution to be regenerated, and the outlet of the second solution flow path is connected to the second liquid inlet (2228) so that the air exchanges heat with the hot solution formed by heat exchange between the solution to be regenerated and the heating medium and takes away moisture from the hot solution.

7. The fresh air dehumidification device according to claim 6, characterized in that: The fresh air dehumidification device also includes: A connecting pipe (214) and a first heat recovery device (215), one end of the connecting pipe (214) is connected to the dehumidification chamber of the solution dehumidification section (211), and the other end is connected to the regeneration tower (2222), and the first heat recovery device (215) is arranged on the connecting pipe (214) and is used for heat exchange with the dehumidification solution flowing in the connecting pipe (214).

8. The fresh air dehumidification device according to claim 1, characterized in that: The cooler (12) comprises: a first cooler (121), wherein a refrigerant inlet of the first cooler (121) is connected to a refrigerant outlet of the compressor (11); the first cooler (121) comprises a first refrigerant flow path and a heating medium flow path for exchanging heat with each other, and the outlet of the heating medium flow path forms the first discharge port (1211); A second cooler (122), wherein a refrigerant inlet of the second cooler (122) is connected to a refrigerant outlet of the first cooler (121); the second cooler (122) has a second refrigerant flow path and a cooling medium flow path for mutual heat exchange; A cooling tower (15) has a cooling medium in its cooling cavity, and the cooling cavity is connected to the cooling medium flow path.

9. The fresh air dehumidification device according to claim 8, characterized in that: The heat pump structure (1) further comprises: A second heat recovery device (16), a refrigerant outlet of the second cooler (122) is connected to the second heat recovery device (16), and a refrigerant outlet of the evaporator (14) is connected to the second heat recovery device (16).

10. The fresh air dehumidification device according to any one of claims 1 to 9, characterized in that: The heat pump structure (1) has a refrigerant filling port, and the refrigerant filling port is used to introduce carbon dioxide; and / or, The cooler (12) has a first medium filling port, and the first medium filling port is used to introduce water; and / or, The evaporator (14) has a second medium filling port, and the second medium filling port is used for introducing water.

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