Solution dehumidification fresh air system and air conditioner

Abstract

This invention provides a solution-based dehumidification fresh air system and an air conditioner. The solution-based dehumidification fresh air system includes a fresh air inlet duct, a fresh air exhaust duct, and a return air exhaust duct, a humidity control component, and a fresh air heat pump system. The heat exchange component includes a return air heat exchange section and a fresh air heat exchange section, with the return air heat exchange section located inside the return air exhaust duct and the fresh air heat exchange section located inside the fresh air inlet duct. The humidity control component includes a fresh air dehumidification structure and a fresh air regeneration structure that can be connected to each other. The fresh air heat pump system is located on one side of the heat exchange component and the humidity control component, and the heat exchange component and the humidity control component are not simultaneously connected to the fresh air heat pump system, and the liquids in the heat exchange component and the humidity control component do not cross-contaminate. The solution-based dehumidification fresh air system and air conditioner provided by this invention can solve the problems of high operating energy consumption in existing fresh air air conditioning systems, and the need for separate cold and heat source devices to handle fresh air, resulting in system complexity, high energy consumption, and troublesome operation and control.

Description

Technical Field

[0001] This invention relates to the technical field of fresh air equipment, and more specifically, to a solution dehumidification fresh air system and an air conditioner. Background Technology

[0002] Laboratory animals play a vital role in medical research, thus requiring extremely high standards for their living environment. Typical animal laboratory air conditioning systems require 24 / 7 fresh air supply with 15-22 air changes per hour, resulting in very high energy consumption. Solution-based dehumidification air conditioning systems are increasingly widely used in the laboratory animal air conditioning industry due to their high energy efficiency and disinfection effects.

[0003] The operating characteristics of a solution-based air conditioning system are as follows: In summer, the dehumidifying solution cools and dehumidifies the fresh air, diluting the solution. Simultaneously, a heat pump transfers heat to the regenerating solution, which then dissipates heat and moisture to achieve energy balance. In winter, the process is reversed. There is interstage flow exchange between the dehumidifying and regenerating solutions to maintain the concentration balance of both solutions.

[0004] Currently available solution-based laboratory animal ventilation systems generally have built-in heat pump systems and utilize laboratory exhaust air as a heat source for cooling and heating, resulting in relatively low energy consumption. However, in P2 and higher level laboratories, to prevent the spread of drugs and harmful microorganisms in the exhaust air, the exhaust-side solution and the fresh air-side solution cannot come into contact. Therefore, the solutions on the exhaust and fresh air sides cannot undergo interstage flow exchange, and the solution concentration cannot be controlled. Consequently, the exhaust air can only be used for sensible heat recovery, and it is impossible to extract heat from the exhaust air using the solution. The exhaust air cannot be used as a heat source, and an external heat source is required to treat the fresh air.

[0005] As can be seen from the above, current fresh air conditioning systems have high operating energy consumption. In addition, in order to handle fresh air, a separate cold and heat source device is required, which makes the system complex, energy-intensive, and difficult to operate and control. Summary of the Invention

[0006] The main objective of this invention is to provide a solution dehumidification fresh air system and an air conditioner to solve the problems of high energy consumption in existing fresh air air conditioning systems, and the need for separate cold and heat source devices to handle fresh air, resulting in complex systems, high energy consumption, and troublesome operation and control.

[0007] To achieve the above objectives, according to one aspect of the present invention, a solution dehumidification fresh air system is provided, comprising independently configured fresh air inlet duct, fresh air exhaust duct, and return air exhaust duct; a heat exchange assembly comprising a return air heat exchange section and a fresh air heat exchange section, wherein the return air heat exchange section is located inside the return air exhaust duct, and the fresh air heat exchange section is located inside the fresh air inlet duct; and a humidity control assembly comprising a fresh air dehumidification structure and a fresh air regeneration structure that are interconnected, wherein at least a portion of the fresh air dehumidification structure is located in the fresh air inlet duct. On the internal air outlet side, at least a portion of the fresh air regeneration structure is located inside the fresh air exhaust duct; wherein, the fresh air inside the fresh air inlet duct flows through the fresh air heat exchange section for heat exchange, then flows through the fresh air dehumidification structure for humidity regulation before flowing out, and the return air inside the return air exhaust duct flows through the return air heat exchange section for heat and humidity exchange before flowing out; a fresh air heat pump system is located on one side of the heat exchange component and the humidity regulation component, and the heat exchange component and the humidity regulation component are not simultaneously connected to the fresh air heat pump system so that the liquids of the heat exchange component and the humidity regulation component do not cross.

[0008] Furthermore, the fresh air heat pump system includes a first heat exchanger and a second heat exchanger. The heat exchange components include a first heat exchange structure, which has a first return air heat exchange section located on the air inlet side inside the return air and exhaust air duct, and the first return air heat exchange section is communicatively connected to the first heat exchanger; a second heat exchange structure, which is communicatively connected to the first heat exchange structure, and has a second return air heat exchange section located on the air outlet side inside the return air and exhaust air duct, and the second return air heat exchange section is communicatively connected to the second heat exchanger; and a multi-stage heat exchange structure, in which at least one stage of the multi-stage heat exchange structure is communicatively connected to the first heat exchange structure and the second heat exchange structure, and each stage of the heat exchange structure includes a return air heat exchange section and a fresh air heat exchange section.

[0009] Furthermore, the solution dehumidification fresh air system has a first mode, a second mode, and a third mode. When the solution dehumidification fresh air system is in the first mode, the first heat exchange structure and the first heat exchanger are connected, and the second heat exchange structure and the second heat exchanger are connected. When the solution dehumidification fresh air system is in the second mode, the humidity regulating component is connected to the first heat exchanger and the second heat exchanger. The fresh air heat exchange section of each stage of the heat exchange structure is used to cool the fresh air, and the return air heat exchange section of each stage of the heat exchange structure is used to heat the return air. When the solution dehumidification fresh air system is in the third mode, the humidity regulating component is connected to the first heat exchanger and the second heat exchanger. In the multi-stage heat exchange structure, the first-stage heat exchange structure on the air inlet side near the fresh air inlet duct is used to cool the fresh air, and the other-stage heat exchange structure on the air outlet side near the fresh air inlet duct is used to heat the fresh air.

[0010] Furthermore, the multi-stage heat exchange structure includes a first-stage heat exchange structure, which has a first-stage return air heat exchange section and a first-stage fresh air heat exchange section. The first-stage fresh air heat exchange section is located on the inlet side of the fresh air inlet duct, and the first-stage return air heat exchange section is located between the first-stage return air heat exchange section and the second-stage return air heat exchange section. A second-stage heat exchange structure is also included, with the first-stage and second-stage heat exchange structures connected. The second-stage heat exchange structure has a second-stage return air heat exchange section and a second-stage fresh air heat exchange section. The second-stage return air heat exchange section is located between the first-stage and second-stage return air heat exchange sections. Between the first-stage return air heat exchange section and the second-stage return air heat exchange section, the second-stage fresh air heat exchange section is located between the first-stage fresh air heat exchange section and the fresh air dehumidification structure; the third-stage heat exchange structure is connected to the first and second heat exchange structures, and the third-stage heat exchange structure has a third-stage return air heat exchange section and a third-stage fresh air heat exchange section. The third-stage return air heat exchange section is located between the second-stage return air heat exchange section and the second-stage return air heat exchange section, and the third-stage fresh air heat exchange section is located between the second-stage fresh air heat exchange section and the fresh air dehumidification structure.

[0011] Furthermore, the first return air heat exchange section has a liquid inlet at the top, a liquid outlet at the bottom, and a first packing area located between the liquid inlet and the liquid outlet. The first heat exchange structure also includes a first liquid storage tank, which is connected to the liquid outlet of the first return air heat exchange section; a first circulation pipeline, through which the first liquid storage tank is connected to the liquid inlet of the first return air heat exchange section, and a first heat exchanger is disposed on the first circulation pipeline; a first spray head, which is disposed inside the first return air heat exchange section, is connected to the liquid inlet of the first return air heat exchange section, and sprays liquid toward the first packing area, so that the return air exchanges heat and moisture with the liquid inside the first packing area when it flows through the first packing area; a first liquid supply pipe, through which the first liquid storage tank is connected to the second heat exchange structure; and a first balance pipe, through which the first liquid storage tank is connected to the third-stage heat exchange structure.

[0012] Furthermore, the first heat exchange structure also includes a first pump body, which is disposed at the outlet end of the first liquid storage tank; a first valve body, which is disposed on the circulation pipeline between the first pump body and the first heat exchanger; a second valve body, which is disposed on the circulation pipeline between the first heat exchanger and the liquid inlet of the first return air heat exchange section; and a third valve body, which is disposed on the first liquid supply pipe.

[0013] Furthermore, the second return air heat exchange section has a liquid inlet at the top, a liquid outlet at the bottom, and a second packing area located between the liquid inlet and the liquid outlet. The second heat exchange structure includes a second liquid storage tank, a first liquid storage tank connected to the second liquid storage tank via a first liquid supply pipe, and the second liquid storage tank connected to the liquid outlet of the second return air heat exchange section and the third-stage heat exchange structure; a second circulation pipeline, the second liquid storage tank connected to the liquid inlet of the second return air heat exchange section via a second circulation pipeline, and a second heat exchanger disposed on the second circulation pipeline; and a second spray head, the second spray head... The shower head is located inside the second return air heat exchange section. The second shower head is connected to the liquid inlet of the second return air heat exchange section and sprays liquid toward the second packing area. When the return air flows through the second packing area, it exchanges heat and moisture with the liquid inside the second packing area. The second pump body is located at the liquid outlet of the second liquid storage tank. The fourth valve body is located on the second circulation pipeline between the second liquid storage tank and the second heat exchanger. The fifth valve body is located on the second circulation pipeline between the liquid inlet of the second heat exchanger and the second return air heat exchange section.

[0014] Furthermore, the third-stage return air heat exchange section has a liquid inlet at the top, a liquid outlet at the bottom, and a third-stage packing area located between the liquid inlet and the liquid outlet. The third-stage heat exchange structure includes a third-stage liquid storage tank, which is connected to the liquid outlet of the third-stage return air heat exchange section and the first liquid storage tank; a third-stage circulation pipeline, through which the third-stage liquid storage tank is connected to the liquid inlet of the third-stage return air heat exchange section; a third-stage balance pipe, through which the third-stage liquid storage tank is connected to the second liquid storage tank; a third-stage heat pump system, which includes a third-stage fresh air heat exchange section and a third-stage heat exchanger, with the third-stage heat exchanger installed on the third-stage circulation pipeline and the third-stage fresh air heat exchange section being a heat exchanger structure; and a third-stage pump body, which is installed at the liquid outlet end of the third-stage liquid storage tank.

[0015] Furthermore, the third-stage heat pump system also includes a third-stage compressor; a third-stage four-way valve, through which the third-stage compressor is connected to the third-stage heat exchanger and the third-stage fresh air heat exchange section respectively; and a third-stage expansion valve, which is located between the third-stage heat exchanger and the third-stage fresh air heat exchange section.

[0016] Furthermore, the first-stage return air heat exchange section has a liquid inlet at the top, a liquid outlet at the bottom, and a first-stage packing area located between the liquid inlet and the liquid outlet. The first-stage heat exchange structure includes a first-stage liquid storage tank, which is connected to the liquid outlet of the first-stage return air heat exchange section; a first-stage circulation pipeline, through which the first-stage liquid storage tank is connected to the liquid inlet of the first-stage return air heat exchange section; a first-stage balance pipe, through which the first-stage liquid storage tank is connected to the second-stage heat exchange structure; a first-stage fresh air heat exchange section, which is a coil structure and is located on the first-stage circulation pipeline; and a first-stage pump body, which is located at the liquid outlet end of the first-stage liquid storage tank.

[0017] Furthermore, the second-stage return air heat exchange section has a liquid inlet at the top, a liquid outlet at the bottom, and a second-stage packing area located between the liquid inlet and the liquid outlet. The second-stage heat exchange structure includes a second-stage liquid storage tank, which is connected to the liquid outlet of the second-stage return air heat exchange section and the first-stage liquid storage tank; a second-stage circulation pipeline, through which the second-stage liquid storage tank is connected to the liquid inlet of the second-stage return air heat exchange section; a second-stage heat pump system, which includes a second-stage fresh air heat exchange section and a second-stage heat exchanger, with the second-stage heat exchanger installed on the second-stage circulation pipeline and the second-stage fresh air heat exchange section being a heat exchanger structure; and a second-stage pump body, which is installed at the liquid outlet end of the second-stage liquid storage tank.

[0018] Furthermore, the second-stage heat pump system also includes a second-stage compressor; a second-stage four-way valve, through which the second-stage compressor is connected to the second-stage heat exchanger and the second-stage fresh air heat exchange section respectively; and a second-stage expansion valve, which is located between the second-stage heat exchanger and the second-stage fresh air heat exchange section.

[0019] Furthermore, the fresh air dehumidification structure includes a fresh air dehumidification liquid storage tank; a fresh air dehumidification section, which includes a liquid inlet at the top, a liquid outlet at the bottom, and a dehumidification packing area located between the liquid inlet and the liquid outlet, the liquid outlet of the fresh air dehumidification section being connected to the fresh air dehumidification liquid storage tank; a dehumidification circulation pipe, through which the fresh air dehumidification liquid storage tank is connected to the liquid inlet of the fresh air dehumidification section; and a dehumidification spray head, which is located inside the fresh air dehumidification section and connected to the liquid inlet of the fresh air dehumidification section. The system sprays liquid towards the dehumidification packing area; the dehumidification supply pipe connects the fresh air dehumidification storage tank to the fresh air regeneration structure; the dehumidification balance pipe connects the fresh air dehumidification storage tank to the fresh air regeneration structure; the first connecting pipe connects the dehumidification circulation pipe to the second circulation pipeline between the fourth valve body and the second heat exchanger; the second connecting pipe connects the liquid inlet of the fresh air dehumidification section to the second circulation pipeline between the second heat exchanger and the fifth valve body.

[0020] Furthermore, the fresh air dehumidification structure also includes a dehumidification pump, which is installed at the outlet end of the fresh air dehumidification storage tank; a sixth valve body, which is installed on the first connecting pipe; a seventh valve body, which is installed on the second connecting pipe; an eighth valve body, which is installed on the dehumidification supply pipe; and a ninth valve body, which is installed on the dehumidification circulation pipe between the first connecting pipe and the second connecting pipe.

[0021] Furthermore, the fresh air regeneration structure includes a fresh air regeneration liquid storage tank; a fresh air regeneration heat exchange section, which includes a liquid inlet at the top, a liquid outlet at the bottom, and a regeneration packing area located between the liquid inlet and the liquid outlet, the liquid outlet of the fresh air regeneration heat exchange section being connected to the fresh air regeneration liquid storage tank; a regeneration pump, which is located at the liquid outlet end of the fresh air regeneration liquid storage tank; a regeneration liquid outlet pipe, which connects the fresh air regeneration liquid storage tank to a first circulation pipeline between the first valve body and the first heat exchanger; a regeneration liquid return pipe, one end of which is connected to the liquid inlet of the fresh air regeneration heat exchange section, and the other end of which is connected to the first circulation pipeline between the first heat exchanger and the second valve body; a regeneration spray head, which is located inside the fresh air regeneration heat exchange section, and is connected to the liquid inlet of the fresh air regeneration heat exchange section and sprays liquid toward the regeneration packing area; a tenth valve body, which is located on the regeneration liquid outlet pipe; and an eleventh valve body, which is located on the regeneration liquid return pipe.

[0022] Furthermore, the fresh air heat pump system includes a heat source compressor, a heat source four-way valve, a first heat exchanger, a heat source expansion valve, and a second heat exchanger, all connected in series.

[0023] Furthermore, the solution dehumidification fresh air system also includes a supply air fan, which is installed inside the fresh air intake duct; a return air exhaust fan, which is installed inside the return air exhaust duct; and a fresh air exhaust fan, which is installed inside the fresh air exhaust duct.

[0024] According to another aspect of the present invention, an air conditioner is provided, which includes the above-described solution dehumidification fresh air system.

[0025] According to the technical solution of this invention, the solution dehumidification fresh air system includes a fresh air inlet duct, a fresh air exhaust duct, a return air exhaust duct, a humidity control component, and a fresh air heat pump system. The heat exchange component includes a return air heat exchange section and a fresh air heat exchange section, with the return air heat exchange section located inside the return air exhaust duct and the fresh air heat exchange section located inside the fresh air inlet duct. The humidity control component includes a fresh air dehumidification structure and a fresh air regeneration structure that can be connected. At least a portion of the fresh air dehumidification structure is located on the air outlet side inside the fresh air inlet duct, and at least a portion of the fresh air regeneration structure is located inside the fresh air exhaust duct. The fresh air heat pump system is located on one side of the heat exchange component and the humidity control component. The heat exchange component and the humidity control component are not simultaneously connected to the fresh air heat pump system to prevent the liquids in the heat exchange component and the humidity control component from crossing.

[0026] The fresh air inside the fresh air intake duct flows through the fresh air heat exchange section for heat exchange, then flows through the fresh air dehumidification structure for humidity adjustment before flowing out. The return air inside the return air exhaust duct flows through the return air heat exchange section for heat and humidity exchange before flowing out.

[0027] As can be seen from the above, the solution dehumidification fresh air system of this application uses three air ducts for ventilation, so as to realize the introduction of fresh air into the room from inside the fresh air intake duct, the exhaust air duct to exhaust return air to the outside, and the fresh air exhaust duct to exhaust fresh air to the outside. Since the return air comes into contact with the liquid inside the return air heat exchange section for heat and humidity exchange, and the fresh air comes into contact with the liquid inside the fresh air dehumidification structure for humidity regulation, the liquid inside the heat exchange component and the liquid inside the dehumidification regulating component of this application do not come into contact, so as to avoid cross-contamination of harmful microorganisms in the return air and fresh air. At the same time, this application can realize the recycling of heat and humidity inside the fresh air and return air, effectively improving the thermal efficiency of latent heat without the need for additional heating and cooling devices. In addition, the heat exchange component and the dehumidification regulating component of this application can share a set of fresh air heat exchange system, reducing energy consumption, with simple structure and convenient control. Attached Figure Description

[0028] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0029] Figure 1 A schematic diagram of the connection relationship of the solution dehumidification fresh air system according to the present invention is shown.

[0030] The above figures include the following reference numerals:

[0031] 1. First heat exchange structure; 11. First liquid storage tank; 12. First pump body; 13. Third valve body; 14. First valve body; 15. Second valve body; 16. First circulation pipeline; 17. First balance pipe; 18. First supply pipe; 2. First-stage return air heat exchange section; 21. First-stage liquid storage tank; 22. First-stage pump body; 23. Overflow pipe; 24. First-stage fresh air heat exchange section; 25. First-stage circulation pipeline; 26. First-stage balance pipe; 3. Second-stage return air heat exchange section; 1. Second-stage liquid storage tank; 32. Second-stage pump body; 33. Second-stage circulation pipeline; 34. Second-stage compressor; 35. Second-stage four-way valve; 36. Second-stage expansion valve; 37. Second-stage fresh air heat exchange section; 38. Second-stage heat exchanger; 4. Third-stage return air heat exchange section; 41. Third-stage liquid storage tank; 42. Third-stage pump body; 43. Third-stage circulation pipeline; 44. Third-stage compressor; 45. Third-stage four-way valve; 46. Third-stage expansion valve; 47. Third-stage fresh air... 48. Heat exchange section; 49. Third-stage heat exchanger; 5. Third-stage balance pipe; 6. Second return air heat exchange section; 51. Second liquid storage tank; 52. Second pump body; 53. Second circulation pipeline; 54. Fourth valve body; 55. Fifth valve body; 6. Fresh air regeneration heat exchange section; 61. Fresh air regeneration liquid storage tank; 62. Regeneration pump; 63. Regeneration return liquid pipe; 64. Eleventh valve body; 65. Tenth valve body; 7. Fresh air dehumidification section; 71. Fresh air dehumidification liquid storage tank; 72. Dehumidification pump; 73. 74. Dehumidification circulation pipe; 75. Eighth valve body; 76. Dehumidification liquid supply pipe; 77. Sixth valve body; 78. Ninth valve body; 79. Seventh valve body; 70. Heat source compressor; 710. Heat source four-way valve; 711. First heat exchanger; 712. Heat source expansion valve; 713. Second heat exchanger; 714. Dehumidification balance pipe; 8. Supply air fan; 81. Return air exhaust fan; 82. Fresh air exhaust fan; 91. Fresh air inlet duct; 92. Fresh air exhaust duct; 93. Return air exhaust duct. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0034] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0035] Example 1

[0036] To address the issues of high energy consumption and the need for separate cold and heat source devices to handle fresh air in existing fresh air air conditioning systems, which result in complex systems, high energy consumption, and cumbersome operation and control, this embodiment provides a solution dehumidification fresh air system. The solution dehumidification fresh air system is mainly used in air conditioners in both residential and industrial applications.

[0037] like Figure 1 As shown, the solution dehumidification fresh air system includes a fresh air inlet duct 91, a fresh air exhaust duct 92, and a return air exhaust duct 93, a humidity control component, and a fresh air heat pump system. The heat exchange component includes a return air heat exchange section and a fresh air heat exchange section. The return air heat exchange section is located inside the return air exhaust duct 93, and the fresh air heat exchange section is located inside the fresh air inlet duct 91. The humidity control component includes a fresh air dehumidification structure and a fresh air regeneration structure that can be connected. At least a portion of the fresh air dehumidification structure is located on the air outlet side inside the fresh air inlet duct 91, and at least a portion of the fresh air regeneration structure is located inside the fresh air exhaust duct 92. The fresh air heat pump system is located on one side of the heat exchange component and the humidity control component. The heat exchange component and the humidity control component are not simultaneously connected to the fresh air heat pump system so that the liquids in the heat exchange component and the humidity control component do not cross-contaminate.

[0038] The fresh air inside the fresh air intake duct 91 flows through the fresh air heat exchange section for heat exchange, then flows through the fresh air dehumidification structure for humidity adjustment before flowing out. The return air inside the return air exhaust duct 93 flows through the return air heat exchange section for heat and humidity exchange before flowing out.

[0039] Specifically, the solution dehumidification fresh air system of this application employs three air ducts for ventilation: a fresh air inlet duct 91 for supplying fresh air into the room, a return air exhaust duct 93 for exhausting return air to the outside, and a fresh air exhaust duct 92 for exhausting fresh air to the outside. Since the return air contacts the liquid inside the return air heat exchange section for heat and humidity exchange, and the fresh air contacts the liquid inside the fresh air dehumidification structure for humidity regulation, the liquid inside the heat exchange component and the liquid inside the dehumidification regulating component of this application do not come into contact, thus avoiding cross-contamination of harmful microorganisms in the return air and fresh air. Simultaneously, this application enables the recycling of heat and humidity within the fresh air and return air, effectively improving the thermal efficiency of latent heat without the need for additional heating and cooling devices. Furthermore, the heat exchange component and the dehumidification regulating component of this application can share a single fresh air heat exchange system, reducing energy consumption, simplifying the structure, and facilitating control.

[0040] Furthermore, the air inside the fresh air intake duct 91 and the return air exhaust duct 93 flows in the same direction and does not cross.

[0041] It should be noted that the solution dehumidification fresh air system is used to provide fresh air with preset temperature and humidity to the room; therefore, the fresh air intake duct 91 introduces outdoor fresh air into the room; return air refers to the gas discharged from the room towards the outside.

[0042] In this embodiment, the humidity control component is used to regulate the humidity of the fresh air, so as to absorb or dehumidify the fresh air through gas-liquid contact. The application sets the fresh air dehumidification structure on the air outlet side of the fresh air inlet duct 91 to regulate the humidity of the fresh air entering the outdoor area.

[0043] like Figure 1 As shown, the fresh air heat pump system includes a heat source compressor 79, a heat source four-way valve 710, a first heat exchanger 711, a heat source expansion valve 712, and a second heat exchanger 713, to form a complete geothermal heat pump system.

[0044] The heat source four-way valve 710 controls the flow of refrigerant inside the heat source compressor 79, enabling the heat pump system to switch between heating and cooling modes via the heat source four-way valve 710. In heating mode, the first heat exchanger 711 acts as an evaporator, and the second heat exchanger 713 acts as a condenser; in cooling mode, the first heat exchanger 711 acts as a condenser, and the second heat exchanger 713 acts as an evaporator.

[0045] Furthermore, the heat exchange assembly includes a first heat exchange structure 1, a second heat exchange structure, and a multi-stage heat exchange structure. The first heat exchange structure 1 has a first return air heat exchange section located inside the return air exhaust duct 93 on the air inlet side. The first return air heat exchange section is connected to the first heat exchanger 711. The second heat exchange structure is connected to the first heat exchange structure 1. The second heat exchange structure has a second return air heat exchange section 5 located inside the return air exhaust duct 93 on the air outlet side. The second return air heat exchange section 5 is connected to the second heat exchanger 713. At least one stage of the multi-stage heat exchange structure is connected to the first heat exchange structure 1 and the second heat exchange structure. Each stage of the heat exchange structure includes a return air heat exchange section and a fresh air heat exchange section.

[0046] The multi-stage heat exchange structure has a fresh air heat exchange section, and the first heat exchange structure 1, the second heat exchange structure and the multi-stage heat exchange structure all have a return air heat exchange section. The return air heat exchange section is used for gas-liquid contact to achieve heat and humidity exchange with the return air. The fresh air heat exchange section is a heat exchanger structure, and the fresh air flows through the outer surface of the heat exchanger structure to exchange heat with the heat exchanger structure.

[0047] Furthermore, the first return air heat exchange section is connected to the first heat exchanger 711 to heat the liquid inside the first return air heat exchange section, thereby heating and humidifying the return air; the second return air heat exchange section 5 is connected to the second heat exchanger 713 to cool the liquid inside the second return air heat exchange section 5, thereby cooling and dehumidifying the return air.

[0048] In this embodiment, the multi-stage heat exchange structure includes a first-stage heat exchange structure, a second-stage heat exchange structure, and a third-stage heat exchange structure. The first-stage heat exchange structure has a first-stage return air heat exchange section 2 and a first-stage fresh air heat exchange section 24. The first-stage fresh air heat exchange section 24 is located on the inlet side of the fresh air inlet duct 91. The first-stage return air heat exchange section 2 is located between the first return air heat exchange section and the second return air heat exchange section 5. The first-stage heat exchange structure and the second-stage heat exchange structure are connected. The second-stage heat exchange structure has a second-stage return air heat exchange section 3 and a second-stage fresh air heat exchange section 37. The second-stage return air... Heat exchange section 3 is located between the first-stage return air heat exchange section 2 and the second-stage return air heat exchange section 5. Second-stage fresh air heat exchange section 37 is located between the first-stage fresh air heat exchange section 24 and the fresh air dehumidification structure. Third-stage heat exchange structure is connected to the first heat exchange structure 1 and the second heat exchange structure. The third-stage heat exchange structure includes a third-stage return air heat exchange section 4 and a third-stage fresh air heat exchange section 47. The third-stage return air heat exchange section 4 is located between the second-stage return air heat exchange section 3 and the second-stage return air heat exchange section 5. The third-stage fresh air heat exchange section 47 is located between the second-stage fresh air heat exchange section 37 and the fresh air dehumidification structure. Fresh air flows sequentially through the first-stage fresh air heat exchange section 24, the second-stage fresh air heat exchange section 37, the third-stage fresh air heat exchange section 47, and the fresh air dehumidification structure. Return air flows sequentially through the first return air heat exchange section, the first-stage return air heat exchange section 2, the second-stage return air heat exchange section 3, the third-stage return air heat exchange section 4, and the second-stage return air heat exchange section 5.

[0049] like Figure 1 As shown, the first return air heat exchange section has a liquid inlet at the top, a liquid outlet at the bottom, and a first packing area located between the liquid inlet and the liquid outlet. The first heat exchange structure 1 also includes a first liquid storage tank 11, a first circulation pipeline 16, a first spray head, a first liquid supply pipe 18, and a first balance pipe 17.

[0050] Specifically, the first liquid storage tank 11 is connected to the liquid outlet of the first return air heat exchange section, the first liquid storage tank 11 is connected to the liquid inlet of the first return air heat exchange section through the first circulation pipe 16, the first heat exchanger 711 is installed on the first circulation pipe 16, the first spray head is installed inside the first return air heat exchange section, the first spray head is connected to the liquid inlet of the first return air heat exchange section and sprays liquid toward the first packing area, when the return air flows through the first packing area, it exchanges heat and moisture with the liquid inside the first packing area, the first liquid storage tank 11 is connected to the second heat exchange structure through the first liquid supply pipe 18, and the first liquid storage tank 11 is connected to the third-stage heat exchange structure through the first balance pipe 17.

[0051] Specifically, a first spray head is used to spray liquid onto the first packing zone to increase the contact area between the return air and the liquid inside the first packing zone, thereby improving the efficiency of heat and humidity exchange; a first balance pipe 17 is connected to the third-stage heat exchange structure to maintain the liquid concentration balance inside the first liquid storage tank 11 and the third-stage liquid storage tank 41.

[0052] Furthermore, to improve the liquid supply efficiency, a first pump body 12 is provided at the liquid outlet of the first liquid storage tank 11. The first pump body 12 provides driving force for the liquid to flow in the first circulation pipeline 16 and the first liquid supply pipeline 18.

[0053] Furthermore, the first heat exchange structure 1 also includes a first valve body 14, a second valve body 15, and a third valve body 13. The first valve body 14 is disposed on the circulation pipeline between the first pump body 12 and the first heat exchanger 711, the second valve body 15 is disposed on the circulation pipeline between the first heat exchanger 711 and the liquid inlet of the first return air heat exchange section, and the third valve body 13 is disposed on the first liquid supply pipe 18. The first valve body 14 and the second valve body 15 are used to control the opening and closing of the first circulation pipeline 16, and the third valve body 13 is used to control the opening and closing of the first liquid supply pipe 18.

[0054] like Figure 1 As shown, the second return air heat exchange section 5 has a liquid inlet at the top, a liquid outlet at the bottom, and a second packing area located between the liquid inlet and the liquid outlet. The second heat exchange structure includes a second liquid storage tank 51, a second circulation pipeline 53, a second spray head, a second pump body 52, a fourth valve body 54, and a fifth valve body 55.

[0055] Specifically, the first liquid storage tank 11 is connected to the second liquid storage tank 51 through the first liquid supply pipe 18, and the second liquid storage tank 51 is connected to the liquid outlet of the second return air heat exchange section 5 and the third-stage heat exchange structure; the second liquid storage tank 51 is connected to the liquid inlet of the second return air heat exchange section 5 through the second circulation pipe 53, and the second heat exchanger 713 is installed on the second circulation pipe 53; the second spray head is installed inside the second return air heat exchange section 5, and the second spray head is connected to the liquid inlet of the second return air heat exchange section 5 and sprays liquid toward the second packing area, so that the return air exchanges heat and moisture with the liquid inside the second packing area when it flows through the second packing area; the second pump body 52 is installed at the liquid outlet of the second liquid storage tank 51; the fourth valve body 54 is installed on the second circulation pipe 53 between the second liquid storage tank 51 and the second heat exchanger 713; and the fifth valve body 55 is installed on the second circulation pipe 53 between the second heat exchanger 713 and the liquid inlet of the second return air heat exchange section 5.

[0056] The second spray head sprays liquid into the second packing zone to increase the contact area between the return air and the interior of the second packing zone, thereby improving the heat and humidity exchange efficiency; the second pump body 52 provides driving force for the liquid flow; and the fourth valve body 54 and the fifth valve body 55 are used to control the on / off of the pipeline.

[0057] Furthermore, the third-stage heat exchange structure includes a third-stage liquid storage tank 41, a third-stage circulation pipeline 43, a third-stage heat pump system, and a third-stage pump body 42. The third-stage return air heat exchange section 4 has a liquid inlet at the top, a liquid outlet at the bottom, and a third-stage packing area located between the liquid inlet and the liquid outlet. The third-stage liquid storage tank 41 is connected to the liquid outlet of the third-stage return air heat exchange section 4, the first liquid storage tank 11, and the second liquid storage tank 51. The third-stage liquid storage tank 41 is connected to the liquid inlet of the third-stage return air heat exchange section 4 through the third-stage circulation pipeline 43. The third-stage heat pump system includes a third-stage fresh air heat exchange section 47 and a third-stage heat exchanger 48. The third-stage heat exchanger 48 is installed on the third-stage circulation pipeline 43, and the third-stage pump body 42 is installed at the liquid outlet end of the third-stage liquid storage tank 41.

[0058] Furthermore, the third-stage heat exchange structure also includes a third-stage balance pipe 49, and the third-stage liquid storage tank 41 is connected to the second liquid storage tank 51 through the third-stage balance pipe 49.

[0059] The third-stage spray head sprays liquid into the third-stage packing zone to increase the contact area between the return air and the interior of the third-stage packing zone, thereby improving the heat and humidity exchange efficiency; the third-stage pump body 42 provides driving force for the liquid flow.

[0060] In this embodiment, the third-stage heat pump system further includes a third-stage compressor 44, a third-stage four-way valve 45, and a third-stage expansion valve 46. The third-stage compressor 44 is connected to the third-stage heat exchanger 48 and the third-stage fresh air heat exchange section 47 via the third-stage four-way valve 45. The third-stage four-way valve 45 is located between the third-stage heat exchanger 48 and the third-stage fresh air heat exchange section 47. The third-stage compressor 44 controls the flow direction through the third-stage four-way valve 45, thereby enabling the third-stage heat pump system to switch between heating and cooling modes. In heating mode, the third-stage fresh air heat exchange section 47 acts as a condenser to heat the fresh air, and the third-stage heat exchanger 48 acts as an evaporator. In cooling mode, the third-stage fresh air heat exchange section 47 acts as an evaporator to cool the fresh air, and the third-stage heat exchanger 48 acts as a condenser.

[0061] like Figure 1 As shown, the first-stage heat exchange structure includes a first-stage liquid storage tank 21, a first-stage circulation pipeline 25, a first-stage fresh air heat exchange section 24, and a first-stage pump body 22. The first-stage liquid storage tank 21 is connected to the liquid outlet of the first-stage return air heat exchange section 2 and the second-stage heat exchange structure. The first-stage liquid storage tank 21 is connected to the liquid inlet of the first-stage return air heat exchange section 2 through the first-stage circulation pipeline 25. The first-stage fresh air heat exchange section 24 is a coil structure and is installed on the first-stage circulation pipeline 25. The first-stage pump body 22 is installed at the liquid outlet of the first-stage liquid storage tank 21.

[0062] Specifically, the first-stage return air heat exchange section 2 has a liquid inlet at the top, a liquid outlet at the bottom, and a first-stage packing zone located between the liquid inlet and the liquid outlet, and the return air comes into contact with the liquid inside the first-stage packing zone.

[0063] Furthermore, the interior of the first-stage return air heat exchange section 2 is also provided with a first-stage spray head that communicates with the liquid inlet of the first-stage return air heat exchange section 2, so as to spray liquid into the interior of the first-stage packing area to increase the gas-liquid contact area.

[0064] Furthermore, the first-stage liquid storage tank 21 is connected to an overflow pipe 23 so that when the liquid in the first-stage liquid storage tank 21 is full, the liquid can be discharged out through the overflow pipe 23.

[0065] Furthermore, the first-stage heat exchange structure also includes a first-stage balance pipe 26, and the first-stage liquid storage tank 21 is connected to the second-stage heat exchange structure through the first-stage balance pipe 26.

[0066] In this embodiment, the fresh air exchanges heat with the surface of the coil structure, and the first-stage pump 22 provides driving force for the liquid circulation.

[0067] like Figure 1 As shown, the second-stage heat exchange structure includes a second-stage liquid storage tank 31, a second-stage circulation pipeline 33, a second-stage heat pump system, and a second pump body 52. ​​The second-stage liquid storage tank 31 is connected to the liquid outlet of the second-stage return air heat exchange section 3 and the first-stage liquid storage tank 21. The second-stage liquid storage tank 31 is connected to the liquid inlet of the second-stage return air heat exchange section 3 through the second-stage circulation pipeline 33. The second-stage heat pump system includes a second-stage fresh air heat exchange section 37 and a second-stage heat exchanger 38. The second-stage heat exchanger 38 is installed on the second-stage circulation pipeline 33. The second-stage fresh air heat exchange section 37 is a heat exchanger structure. The second-stage pump body 32 is installed at the liquid outlet of the second-stage liquid storage tank 31.

[0068] Specifically, the second-stage return air heat exchange section 3 has a liquid inlet at the top, a liquid outlet at the bottom, and a second-stage packing zone located between the liquid inlet and the liquid outlet, and the return air comes into contact with the liquid inside the second-stage packing zone.

[0069] Furthermore, the interior of the second-stage return air heat exchange section 3 is also equipped with a second-stage spray head that communicates with the liquid inlet of the second-stage return air heat exchange section 3, for spraying liquid into the interior of the second-stage packing area to increase the gas-liquid contact area.

[0070] In this embodiment, the second-stage heat pump system further includes a second-stage compressor 34, a second-stage four-way valve 35, and a second-stage expansion valve 36. The second-stage compressor 34 is connected to the second-stage heat exchanger 38 and the second-stage fresh air heat exchange section 37 via the second-stage four-way valve 35. The second-stage four-way valve 35 is located between the second-stage heat exchanger 38 and the second-stage fresh air heat exchange section 37. The second-stage heat pump system has a cooling mode and a heating mode. By controlling the second-stage four-way valve 35, the flow direction of the fluid flowing out of the second-stage compressor 34 can be controlled, thereby controlling the mode of the second-stage heat pump system. When the second-stage heat pump system is in heating mode, the second-stage fresh air heat exchange section 37 acts as a condenser, and the second-stage heat exchanger 38 acts as an evaporator; when the second-stage heat pump system is in cooling mode, the second-stage fresh air heat exchange section 37 acts as an evaporator, and the second-stage heat exchanger 38 acts as a condenser.

[0071] like Figure 1 As shown, the fresh air dehumidification structure includes a fresh air dehumidification storage tank 71, a fresh air dehumidification section 7, a dehumidification circulation pipe 73, a dehumidification spray head, a dehumidification supply pipe 75, a dehumidification balance pipe 714, a first connecting pipe, and a second connecting pipe.

[0072] Specifically, the fresh air dehumidification unit 7 includes a liquid inlet at the top, a liquid outlet at the bottom, and a dehumidification packing area located between the liquid inlet and the liquid outlet. The liquid outlet of the fresh air dehumidification unit 7 is connected to the fresh air dehumidification storage tank 71. The fresh air dehumidification storage tank 71 is connected to the liquid inlet of the fresh air dehumidification unit 7 through a dehumidification circulation pipe 73. The dehumidification spray head is installed inside the fresh air dehumidification unit 7. The dehumidification spray head is connected to the liquid inlet of the fresh air dehumidification unit 7 and sprays liquid towards the dehumidification packing area. The fresh air dehumidification storage tank 71 is connected to the fresh air regeneration structure through a dehumidification supply pipe 75. The fresh air dehumidification storage tank 71 is connected to the fresh air regeneration structure through a dehumidification balance pipe 714. The dehumidification circulation pipe 73 is connected to the second circulation pipe 53 between the fourth valve body 54 and the second heat exchanger 713 through a first connecting pipe. The liquid inlet of the fresh air dehumidification unit 7 is connected to the second circulation pipe 53 between the second heat exchanger 713 and the fifth valve body 55 through a second connecting pipe.

[0073] The dehumidification packing area is designed to increase the contact area between the fresh air and the dehumidification packing area, thereby improving dehumidification efficiency. A dehumidification balance pipe 714 is connected to the fresh air regeneration structure to exchange liquid with the liquid inside the fresh air regeneration structure, thereby achieving liquid concentration balance between the fresh air dehumidification storage tank 71 and the inside of the fresh air regeneration structure.

[0074] Furthermore, the fresh air dehumidification structure also includes a dehumidification pump 72, a sixth valve body 76, a seventh valve body 78, an eighth valve body 74, and a ninth valve body 77. The dehumidification pump 72 is located at the liquid outlet of the fresh air dehumidification storage tank 71 to provide driving force for the liquid to flow out of the fresh air dehumidification storage tank 71. The sixth valve body 76 is located on the first connecting pipe, the seventh valve body 78 is located on the second connecting pipe, and the eighth valve body 74 is located on the dehumidification supply pipe 75 and the dehumidification circulation pipe 73 between the first connecting pipe and the second connecting pipe.

[0075] The valve body is installed on the pipeline to control whether the fluid flows.

[0076] like Figure 1 As shown, the fresh air regeneration structure includes a fresh air regeneration liquid storage tank 61, a fresh air regeneration heat exchange unit 6, a regeneration pump 62, a regeneration liquid outlet pipe, a regeneration liquid return pipe 63, a regeneration spray head, a tenth valve body 65, and an eleventh valve body 64.

[0077] Specifically, the fresh air regeneration heat exchange section 6 includes a liquid inlet at the top, a liquid outlet at the bottom, and a regeneration packing area located between the liquid inlet and the liquid outlet. The liquid outlet of the fresh air regeneration heat exchange section 6 is connected to the fresh air regeneration storage tank 61. The regeneration pump 62 is located at the liquid outlet of the fresh air regeneration storage tank 61. The fresh air regeneration storage tank 61 is connected to the first circulation pipeline 16 between the first valve body 14 and the first heat exchanger 711 through a regeneration liquid outlet pipe. One end of the regeneration return pipe 63 is connected to the liquid inlet of the fresh air regeneration heat exchange section 6, and the other end of the regeneration return pipe 63 is connected to the first circulation pipeline 16 between the first heat exchanger 711 and the second valve body 15. The regeneration spray head is located inside the fresh air regeneration heat exchange section 6, and the regeneration spray head is connected to the liquid inlet of the fresh air regeneration heat exchange section 6 and sprays liquid toward the regeneration packing area. The tenth valve body 65 is located on the regeneration liquid outlet pipe, and the eleventh valve body 64 is located on the regeneration return pipe 63.

[0078] The regenerated liquid outlet pipe, the first circulation pipe 16, and the regenerated liquid return pipe 63 work together to form a circulation pipeline to realize the internal liquid circulation flow of the fresh air regeneration structure.

[0079] Furthermore, the regenerated packing area is used to increase the contact area between the fresh air and the liquid inside the regenerated packing area, so as to achieve the formation of a low-temperature concentrated solution after heat and humidity exchange with the fresh air, which is then connected to the fresh air dehumidification storage tank 71 to balance the concentration inside the fresh air regeneration storage tank 61.

[0080] In this embodiment, the operation of the fresh air regeneration structure is controlled by controlling the tenth valve body 65 and the eleventh valve body 64.

[0081] like Figure 1As shown, the solution dehumidification fresh air system also includes a supply air fan 8, a return air exhaust fan 81, and a fresh air exhaust fan 82. The supply air fan 8 is installed inside the fresh air intake duct 91 to provide driving force for gas flow; the return air exhaust fan 81 is installed inside the return air exhaust duct 93 to provide driving force for gas flow; and the fresh air exhaust fan 82 is installed inside the fresh air exhaust duct 92 to provide driving force for gas flow.

[0082] In this embodiment, the solution dehumidification fresh air system has a first mode, a second mode, and a third mode. The first mode is activated in winter, the second mode is switched in summer, and the third mode is used in spring and autumn.

[0083] When the solution dehumidification fresh air system is in the first mode, the second-stage heat pump system and the third-stage heat pump system are in heating mode, and the fresh air heat source system is in cooling mode. The first heat exchange structure 1 is connected to the first heat exchanger 711, and the second heat exchange structure is connected to the second heat exchanger 713. The first heat exchanger 711 is a condenser to heat the liquid inside the first circulation pipe 16, and the second heat exchanger 713 is an evaporator to cool the liquid inside the second circulation pipe 53. The first valve body 14, the second valve body 15, the third valve body 13, the fourth valve body 54, the fifth valve body 55, and the ninth valve body 77 are in the open state, and the sixth valve body 76, the seventh valve body 78, the eighth valve body 74, the tenth valve body 65, and the eleventh valve body 64 are in the closed state.

[0084] Specifically, fresh air flows sequentially through the first-stage fresh air heat exchange section 24, the second-stage fresh air heat exchange section 37, and the third-stage fresh air heat exchange section 47. All three sections are used to heat the fresh air. The fresh air flowing through the fresh air dehumidification section 7 is enthalpically humidified before exiting the fresh air inlet duct 91. When return air flows through the first return air heat exchange section, it exchanges heat and moisture with the heated liquid, so that the return air is heated and humidified before flowing to the first-stage return air heat exchange section 2. When the liquid inside the first-stage return air heat exchange section 2 comes into contact with the return air, it absorbs the heat and moisture from the return air to form a high-temperature and diluted liquid, thereby increasing the heat for the fresh air. The return air undergoes initial cooling and dehumidification in the first-stage return air heat exchange section 2. Since both the second-stage and third-stage heat pump systems are in heating mode, the liquids inside the second-stage return air heat exchange section 3 and the third-stage return air heat exchange section 4 are low-temperature liquids. After the initial cooling, the return air flows through the second-stage return air heat exchange section 3 and the third-stage return air heat exchange section 4, where it is further cooled and dehumidified before flowing to the second return air heat exchange section 5. The second return air heat exchange section 5 is cooled by the second heat exchanger 713, so the return air is further cooled and dehumidified by the second return air heat exchange section 5 before flowing out of the return air exhaust duct 93.

[0085] When the solution dehumidification fresh air system is in the second mode, the second-stage heat pump system, the third-stage heat pump system, and the fresh air heat source system are all in cooling mode. The fresh air dehumidification structure is connected to the second heat exchanger 713, and the fresh air regeneration structure is connected to the first heat exchanger 711. The first heat exchanger 711 is a condenser to heat the liquid inside the first circulation pipe 16, and the second heat exchanger 713 is an evaporator to cool the liquid inside the second circulation pipe 53. The first valve body 14, the second valve body 15, the third valve body 13, the fourth valve body 54, the fifth valve body 55, and the ninth valve body 77 are in the closed state, while the sixth valve body 76, the seventh valve body 78, the eighth valve body 74, the tenth valve body 65, and the eleventh valve body 64 are in the open state.

[0086] Specifically, fresh air flows sequentially through the first-stage fresh air heat exchange section 24, the second-stage fresh air heat exchange section 37, and the third-stage fresh air heat exchange section 47. All three sections are used to cool the fresh air. Fresh air flowing through the fresh air dehumidification section 7 exchanges heat and moisture with the liquid inside the section, thus cooling and dehumidifying the fresh air before exiting the fresh air inlet duct 91. The liquid inside the dehumidification section 7 is diluted. Another portion of fresh air flows into the fresh air regeneration heat exchange section 6 to concentrate and heat the liquid inside, before exiting the fresh air exhaust duct 92. The liquid inside the dehumidification section 7 is connected to the liquid inside the regeneration heat exchange section 6 for concentration balance. The return air flows through the first-stage return air heat exchange section 2. The liquid inside the first-stage return air heat exchange section 2 is water. When the water comes into contact with the return air, the return air is heated and humidified, forming a low-temperature liquid inside the first-stage return air heat exchange section 2, which in turn cools the fresh air. Since both the second-stage and third-stage heat pump systems are in cooling mode, the return air, after initial cooling, is further heated and humidified as it flows through the second-stage return air heat exchange section 3 and the third-stage return air heat exchange section 4 before exiting the return air exhaust duct 93.

[0087] When the solution dehumidification fresh air system is in the third mode, the third-stage heat pump system is shut down, and both the second-stage heat pump system and the fresh air heat source system are in heating mode. The fresh air dehumidification structure is connected to the second heat exchanger 713, and the fresh air regeneration structure is connected to the first heat exchanger 711. The first heat exchanger 711 is an evaporator to cool the liquid inside the first circulation pipe 16, and the second heat exchanger 713 is a condenser to heat the liquid inside the second circulation pipe 53. The second-stage fresh air heat exchange section 37 is a condenser used to heat the fresh air, and at this time, the liquid inside the second-stage return air heat exchange section 3 is cooled. The first valve body 14, the second valve body 15, the third valve body 13, the fourth valve body 54, the fifth valve body 55, and the ninth valve body 77 are in the closed state, and the sixth valve body 76, the seventh valve body 78, the eighth valve body 74, the tenth valve body 65, and the eleventh valve body 64 are in the open state.

[0088] Specifically, the fresh air flows sequentially through the first-stage fresh air heat exchange section 24, the second-stage fresh air heat exchange section 37, and the third-stage fresh air heat exchange section 47. The first-stage fresh air heat exchange section 24 is used to cool the fresh air, and the second-stage fresh air heat exchange section 37 is used to heat the fresh air. The liquid inside the fresh air dehumidification section 7 is heated and then comes into contact with the fresh air. After being heated and humidified, the fresh air flows out of the fresh air inlet duct 91, and the liquid inside the fresh air dehumidification section 7 is concentrated.

[0089] Another portion of fresh air flows into the fresh air regeneration heat exchanger 6 to cool and dehumidify it. The fresh air then flows out of the fresh air exhaust duct 92. The liquid inside the regeneration heat exchanger is heated and diluted. The liquid inside the fresh air dehumidification section 7 is connected to the liquid inside the fresh air regeneration heat exchanger 6 to achieve concentration balance. The liquid inside the first-stage return air heat exchanger 2 is water. When the return air flows through the first-stage return air heat exchanger 2 and comes into contact with it, the return air is heated and humidified. The liquid inside the second-stage return air heat exchanger 5 is water. After the water is cooled, it comes into contact with the return air. The return air is cooled and dehumidified and then flows out of the return air exhaust duct 93.

[0090] Example 2

[0091] This embodiment provides an air conditioner, which includes the solution dehumidification fresh air system described in Embodiment 1.

[0092] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0093] The solution-based dehumidification fresh air system of this application employs three ducts for ventilation: a fresh air inlet duct 91 for introducing fresh air into the room, a return air exhaust duct 93 for exhausting return air to the outside, and a fresh air exhaust duct 92 for exhausting fresh air to the outside. Since the return air contacts the liquid inside the return air heat exchange section for heat and humidity exchange, and the fresh air contacts the liquid inside the fresh air dehumidification structure for humidity regulation, the liquid inside the heat exchange components and the liquid inside the dehumidification regulating components of this application do not come into contact, thus avoiding cross-contamination of harmful microorganisms in the return air and fresh air. Simultaneously, this application enables the recycling of heat and humidity within the fresh and return air, effectively improving the thermal efficiency of latent heat without the need for additional heating and cooling devices. Furthermore, the heat exchange components and dehumidification regulating components of this application can share a single fresh air heat exchange system, reducing energy consumption, simplifying the structure, and facilitating control.

[0094] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0095] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0096] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0097] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A solution dehumidification fresh air system, characterized in that, The solution dehumidification fresh air system comprises: independently arranged fresh air inlet air duct (91), fresh air exhaust air duct (92) and return air exhaust air duct (93); heat exchange assembly, the heat exchange assembly comprises return air heat exchange part and fresh air heat exchange part, the return air heat exchange part is located inside the return air exhaust air duct (93), the fresh air heat exchange part is located inside the fresh air inlet air duct (91); humidity adjustment assembly, the humidity adjustment assembly comprises the fresh air dehumidification structure and the fresh air regeneration structure that are communicated, at least a part of the fresh air dehumidification structure is located at the air outlet side inside the fresh air inlet air duct (91), at least a part of the fresh air regeneration structure is located inside the fresh air exhaust air duct (92); wherein, the fresh air in the fresh air inlet air duct (91) flows through the fresh air heat exchange part for heat exchange, then flows through the fresh air dehumidification structure for humidity adjustment and flows out, the return air in the return air exhaust air duct (93) flows through the return air heat exchange part for heat exchange and humidity change and then flows out; Fresh air heat pump system, the fresh air heat pump system is arranged at one side of the heat exchange assembly and the humidity adjustment assembly, the heat exchange assembly and the humidity adjustment assembly are not communicated with the fresh air heat pump system at the same time, so that the liquid of the heat exchange assembly and the humidity adjustment assembly does not cross; The fresh air heat pump system comprises first heat exchanger (711) and second heat exchanger (713), and the heat exchange assembly comprises: First heat exchange structure (1), the first heat exchange structure (1) has first return air heat exchange part located at the air inlet side inside the return air exhaust air duct (93), and the first return air heat exchange part is arranged in communication with the first heat exchanger (711); Second heat exchange structure, the second heat exchange structure is arranged in communication with the first heat exchange structure (1), and the second heat exchange structure has second return air heat exchange part (5) located at the air outlet side inside the return air exhaust air duct (93), and the second return air heat exchange part (5) is arranged in communication with the second heat exchanger (713); Multi-stage heat exchange structure, at least one of the multi-stage heat exchange structures is communicated with the first heat exchange structure (1) and the second heat exchange structure, and each stage of the heat exchange structure comprises the return air heat exchange part and the fresh air heat exchange part; The solution dehumidification fresh air system has first mode, second mode and third mode, When the solution dehumidification fresh air system is in the first mode, the first heat exchange structure (1) and the first heat exchanger (711) are communicated, and the second heat exchange structure and the second heat exchanger (713) are communicated; When the solution dehumidification fresh air system is in the second mode, the humidity adjustment assembly is communicated with the first heat exchanger (711) and the second heat exchanger (713), the fresh air heat exchange part of each stage of the heat exchange structure is used for cooling fresh air, and the return air heat exchange part of each stage of the heat exchange structure is used for heating return air. When the solution dehumidification fresh air system is in the third mode, the humidity adjusting assembly is in communication with the first heat exchanger (711) and the second heat exchanger (713), one of the multi-stage heat exchange structures close to the air inlet side of the fresh air inlet air duct (91) is used for cooling fresh air, and another of the multi-stage heat exchange structures close to the air outlet side of the fresh air inlet air duct (91) is used for heating fresh air; The multi-stage heat exchange structure comprises: A first-stage heat exchange structure having a first-stage return air heat exchange part (2) and a first-stage fresh air heat exchange part (24), the first-stage fresh air heat exchange part (24) being located on the air inlet side of the fresh air inlet air duct (91), and the first-stage return air heat exchange part (2) being located between the first return air heat exchange part and the second return air heat exchange part (5); A second-stage heat exchange structure in communication with the first-stage heat exchange structure, the second-stage heat exchange structure having a second-stage return air heat exchange part (3) and a second-stage fresh air heat exchange part (37), the second-stage return air heat exchange part (3) being located between the first-stage return air heat exchange part (2) and the second return air heat exchange part (5), and the second-stage fresh air heat exchange part (37) being located between the first-stage fresh air heat exchange part (24) and the fresh air dehumidification structure; A third-stage heat exchange structure in communication with the first heat exchange structure (1) and the second heat exchange structure, the third-stage heat exchange structure having a third-stage return air heat exchange part (4) and a third-stage fresh air heat exchange part (47), the third-stage return air heat exchange part (4) being located between the second-stage return air heat exchange part (3) and the second return air heat exchange part (5), and the third-stage fresh air heat exchange part (47) being located between the second-stage fresh air heat exchange part (37) and the fresh air dehumidification structure; The third-stage return air heat exchange part (4) has a liquid inlet at the top, a liquid outlet at the bottom, and a third-stage filler area between the liquid inlet and the liquid outlet, and the third-stage heat exchange structure comprises: A third-stage liquid storage tank (41) in communication with the liquid outlet of the third-stage return air heat exchange part (4) and the first liquid storage tank (11) of the first heat exchange structure (1); A third-stage circulating pipeline (43) in communication with the liquid inlet of the third-stage return air heat exchange part (4) through the third-stage liquid storage tank (41); A third-stage balance pipeline (49) in communication with the second liquid storage tank (51) of the second heat exchange structure through the third-stage liquid storage tank (41); A third-stage heat pump system comprising the third-stage fresh air heat exchange part (47) and a third-stage heat exchanger (48), the third-stage heat exchanger (48) being arranged on the third-stage circulating pipeline (43), and the third-stage fresh air heat exchange part (47) being a heat exchanger structure; A third-stage pump body (42) arranged at the liquid outlet end of the third-stage liquid storage tank (41); The first stage return air heat exchange part (2) has a top liquid inlet, a bottom liquid outlet and a first stage filler area between the liquid inlet and the liquid outlet, and the first stage heat exchange structure comprises: A first stage liquid storage tank (21) which communicates with the liquid outlet of the first stage return air heat exchange part (2); A first stage circulating pipeline (25) through which the first stage liquid storage tank (21) communicates with the liquid inlet of the first stage return air heat exchange part (2); A first stage balance pipeline (26) through which the first stage liquid storage tank (21) communicates with the second stage heat exchange structure; The first stage fresh air heat exchange part (24) is a coil structure and is arranged on the first stage circulating pipeline (25); A first stage pump body (22) which is arranged at the liquid outlet end of the first stage liquid storage tank (21); The second stage return air heat exchange part (3) has a top liquid inlet, a bottom liquid outlet and a second stage filler area between the liquid inlet and the liquid outlet, and the second stage heat exchange structure comprises: A second stage liquid storage tank (31) which communicates with the liquid outlet of the second stage return air heat exchange part (3) and the first stage liquid storage tank (21); A second stage circulating pipeline (33) through which the second stage liquid storage tank (31) communicates with the liquid inlet of the second stage return air heat exchange part (3); A second stage heat pump system which comprises the second stage fresh air heat exchange part (37) and a second stage heat exchanger (38), the second stage heat exchanger (38) is arranged on the second stage circulating pipeline (33), and the second stage fresh air heat exchange part (37) is a heat exchanger structure; A second stage pump body (32) which is arranged at the liquid outlet end of the second stage liquid storage tank (31).

2. The solution dehumidification outdoor air system of claim 1, wherein, The first stage return air heat exchange part has a top liquid inlet, a bottom liquid outlet and a first stage filler area between the liquid inlet and the liquid outlet, and the first stage heat exchange structure (1) further comprises: The first stage liquid storage tank (11) which communicates with the liquid outlet of the first stage return air heat exchange part; The first stage circulating pipeline (16) through which the first stage liquid storage tank (11) communicates with the liquid inlet of the first stage return air heat exchange part, and the first stage heat exchanger (711) is arranged on the first stage circulating pipeline (16); The first stage spray head which is arranged inside the first stage return air heat exchange part, communicates with the liquid inlet of the first stage return air heat exchange part and sprays liquid towards the first stage filler area, and the return air exchanges heat and humidity with the liquid inside the first stage filler area when flowing through the first stage filler area; The first stage liquid supply pipeline (18) through which the first stage liquid storage tank (11) communicates with the second stage heat exchange structure; A first balance pipe (17) is arranged to connect the first storage tank (11) with the third stage heat exchange structure.

3. The solution dehumidification outdoor air system of claim 2, wherein, The first heat exchange structure (1) further comprises: A first pump body (12) is arranged at the liquid outlet end of the first storage tank (11); A first valve body (14) is arranged on the circulating pipeline between the first pump body (12) and the first heat exchanger (711); A second valve body (15) is arranged on the circulating pipeline between the first heat exchanger (711) and the liquid inlet of the first return air heat exchange part; A third valve body (13) is arranged on the first liquid supply pipe (18).

4. The solution dehumidification outdoor air system of claim 3, wherein, The second return air heat exchange part (5) has a liquid inlet at the top, a liquid outlet at the bottom, and a second packing area between the liquid inlet and the liquid outlet, and the second heat exchange structure comprises: The second storage tank (51) is connected with the first storage tank (11) through the first liquid supply pipe (18), and the second storage tank (51) is connected with the liquid outlet of the second return air heat exchange part (5) and the third stage heat exchange structure; A second circulating pipeline (53) is arranged to connect the second storage tank (51) with the liquid inlet of the second return air heat exchange part (5), and the second heat exchanger (713) is arranged on the second circulating pipeline (53); A second spray head is arranged inside the second return air heat exchange part (5), and the second spray head is connected with the liquid inlet of the second return air heat exchange part (5) and sprays liquid towards the second packing area, and the return air exchanges heat and humidity with the liquid inside the second packing area when flowing through the second packing area; A second pump body (52) is arranged at the liquid outlet end of the second storage tank (51); A fourth valve body (54) is arranged on the second circulating pipeline (53) between the second storage tank (51) and the second heat exchanger (713); A fifth valve body (55) is arranged on the second circulating pipeline (53) between the second heat exchanger (713) and the liquid inlet of the second return air heat exchange part (5).

5. The solution dehumidification outdoor air system of claim 4, wherein, The third stage heat pump system further comprises: A third stage compressor (44); A third stage four-way valve (45) is arranged to connect the third stage compressor (44) with the third stage heat exchanger (48) and the third stage fresh air heat exchange part (47) respectively; A third stage expansion valve (46) is arranged between the third stage heat exchanger (48) and the third stage fresh air heat exchange part (47).

6. The solution dehumidification outdoor air system of claim 1, wherein, The second stage heat pump system further comprises: A second stage compressor (34); A second-stage four-way valve (35) through which the second-stage compressor (34) is communicated with the second-stage heat exchanger (38) and the second-stage fresh air heat exchange part (37) respectively; A second-stage expansion valve (36) provided between the second-stage heat exchanger (38) and the second-stage fresh air heat exchange part (37).

7. The solution dehumidification outdoor air system of claim 4, wherein, The fresh air dehumidification structure comprises: A fresh air dehumidification liquid storage tank (71); A fresh air dehumidification part (7) comprising a liquid inlet at the top, a liquid outlet at the bottom and a dehumidification filler area between the liquid inlet and the liquid outlet, the liquid outlet of the fresh air dehumidification part (7) being communicated with the fresh air dehumidification liquid storage tank (71); A dehumidification circulating pipe (73) through which the fresh air dehumidification liquid storage tank (71) is communicated with the liquid inlet of the fresh air dehumidification part (7); A dehumidification spray head provided inside the fresh air dehumidification part (7), the dehumidification spray head being communicated with the liquid inlet of the fresh air dehumidification part (7) and spraying liquid towards the dehumidification filler area; A dehumidification liquid supply pipe (75) through which the fresh air dehumidification liquid storage tank (71) is communicated with the fresh air regeneration structure; A dehumidification balance pipe (714) through which the fresh air dehumidification liquid storage tank (71) is communicated with the fresh air regeneration structure; A first communication pipe through which the dehumidification circulating pipe (73) is communicated with the second circulating pipeline (53) between the fourth valve body (54) and the second heat exchanger (713); A second communication pipe through which the liquid inlet of the fresh air dehumidification part (7) is communicated with the second circulating pipeline (53) between the second heat exchanger (713) and the fifth valve body (55).

8. The solution dehumidification outdoor air system of claim 7, wherein, The fresh air dehumidification structure further comprises: A dehumidification pump (72) provided at the liquid outlet end of the fresh air dehumidification liquid storage tank (71); A sixth valve body (76) provided on the first communication pipe; A seventh valve body (78) provided on the second communication pipe; An eighth valve body (74) provided on the dehumidification liquid supply pipe (75); A ninth valve body (77) provided on the dehumidification circulating pipe (73) between the first communication pipe and the second communication pipe.

9. The solution dehumidification outdoor air system of claim 7, wherein, The fresh air regeneration structure comprises: A fresh air regeneration liquid storage tank (61) through which the fresh air dehumidification liquid storage tank (71) is communicated with the fresh air regeneration liquid storage tank (61) through the dehumidification balance pipe (714); A fresh air regeneration heat exchange part (6) comprising a liquid inlet at the top, a liquid outlet at the bottom and a regeneration filler area between the liquid inlet and the liquid outlet, the liquid outlet of the fresh air regeneration heat exchange part (6) being communicated with the fresh air regeneration liquid storage tank (61); A regeneration pump (62) provided at the liquid outlet end of the fresh air regeneration liquid storage tank (61). A regeneration outlet pipe, the fresh air regeneration liquid storage tank (61) is communicated with the first circulating pipeline (16) between the first valve body (14) and the first heat exchanger (711) through the regeneration outlet pipe; A regeneration return liquid pipe (63), one end of the regeneration return liquid pipe (63) is communicated with the liquid inlet of the fresh air regeneration heat exchange part (6), and the other end of the regeneration return liquid pipe (63) is communicated with the first circulating pipeline (16) between the first heat exchanger (711) and the second valve body (15); A regeneration spray head, the regeneration spray head is arranged in the fresh air regeneration heat exchange part (6), the regeneration spray head is communicated with the liquid inlet of the fresh air regeneration heat exchange part (6) and sprays liquid towards the regeneration filler area; A tenth valve body (65), the tenth valve body (65) is arranged on the regeneration outlet pipe; An eleventh valve body (64), the eleventh valve body (64) is arranged on the regeneration return liquid pipe (63).

10. The solution dehumidification ventilation system according to any one of claims 1 to 9, wherein, The fresh air heat pump system comprises a heat source compressor (79), a heat source four-way valve (710), a first heat exchanger (711), a heat source expansion valve (712) and a second heat exchanger (713) which are communicated.

11. The solution dehumidification ventilation system according to any one of claims 1 to 9, wherein, The solution dehumidification fresh air system further comprises: A supply air fan (8), the supply air fan (8) is arranged in the fresh air inlet air duct (91); A return air exhaust fan (81), the return air exhaust fan (81) is arranged in the return air exhaust air duct (93); A fresh air exhaust fan (82), the fresh air exhaust fan (82) is arranged in the fresh air exhaust air duct (92).

12. An air conditioner characterized by comprising: The air conditioner comprises the solution dehumidification fresh air system according to any one of claims 1 to 11.

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