Fresh air radiation air handling system

Abstract

The present application relates to the field of air treatment, especially to a fresh air radiation air treatment system, comprising: a fresh air system, comprising a first heat exchanger and a second heat exchanger; a radiation assembly; a compressor, comprising an exhaust port, a first suction port and a second suction port; a first circuit, the first circuit inlet end is communicated with the exhaust port of the compressor, the first circuit outlet end is communicated with the first suction port of the compressor, the first heat exchanger and the second heat exchanger are arranged on the first circuit, a first throttling valve and a first reversing valve are further arranged on the first circuit, the first throttling valve is located between the first heat exchanger and the second heat exchanger, and the first reversing valve is used for changing the flow direction of refrigerant in the first heat exchanger and the second heat exchanger; a second circuit, the second circuit inlet end is communicated with the exhaust port of the compressor, the second circuit outlet end is communicated with the second suction port of the compressor, and the radiation assembly is arranged on the second circuit to improve the efficiency of air treatment.

Description

Technical Field

[0001] This invention relates to the field of air treatment, and more particularly to a fresh air radiant air treatment system. Background Technology

[0002] Conventional radiant systems take a long time to adjust the room temperature to the target temperature, and since they cool the room air directly, condensation and dripping water are likely to form at the radiant terminals. Therefore, radiant systems are usually used in conjunction with multi-split air conditioning units. The cost of two sets of equipment is relatively high, and the radiant system is basically not started during the transitional season, resulting in relatively low equipment utilization.

[0003] There is currently no effective solution to the above problems. Summary of the Invention

[0004] This invention utilizes a two-stage compression enthalpy-increasing compressor to organically combine a fresh air system and a radiation system, thereby improving the efficiency of air handling.

[0005] An air handling system, comprising:

[0006] The fresh air system includes a first heat exchanger and a second heat exchanger;

[0007] Radiation components;

[0008] The compressor includes an exhaust port, a first intake port, and a second intake port;

[0009] The first circuit has an inlet end connected to the exhaust port of the compressor and an outlet end connected to the first suction port of the compressor. The first heat exchanger and the second heat exchanger are arranged on the first circuit. The first circuit is also provided with a first throttle valve and a first reversing valve. The first throttle valve is located between the first heat exchanger and the second heat exchanger. The first reversing valve is used to change the flow direction of the refrigerant in the first heat exchanger and the second heat exchanger.

[0010] The second circuit has its inlet end connected to the exhaust port of the compressor and its outlet end connected to the second intake port of the compressor. The radiating component is disposed on the second circuit.

[0011] Preferably, the air handling system further includes an outdoor heat exchanger, a second throttle valve, and a second reversing valve disposed on the second circuit. The second throttle valve is located between the outdoor heat exchanger and the radiant assembly, and the second reversing valve is used to change the flow direction of the refrigerant in the outdoor heat exchanger.

[0012] Preferably, the fresh air system further includes a third heat exchanger; the air handling system further includes a third loop, the third heat exchanger being disposed on the third loop, wherein the first end of the third loop is connected to the loop between the second throttling valve and the outdoor heat exchanger, the second end of the third loop is connected to the loop between the second reversing valve and the radiant assembly, and a third throttling valve is disposed on the loop between the first end of the third loop and the third heat exchanger.

[0013] Preferably, the radiation assembly includes a radiation pipe network and a shell-and-tube heat exchanger, the radiation pipe network and the shell-and-tube heat exchanger are connected through a fourth loop, and a water pump is provided on the fourth loop to drive the fluid circulation within the fourth loop.

[0014] Preferably, the second circuit is coupled with the shell-and-tube heat exchanger for heat exchange.

[0015] Preferably, the compressor is an enthalpy-increasing compressor, and the first suction port is a gas replenishment port;

[0016] The opening of the first throttle valve is such that the pressure of the refrigerant entering the air supply port is greater than the pressure of the refrigerant entering the second air intake port.

[0017] Preferably, the air handling system further includes:

[0018] The controller is used to control the first reversing valve and the second reversing valve to change their operating modes, thereby changing the flow direction of the refrigerant in the first heat exchanger, the second heat exchanger, the third heat exchanger, the outdoor heat exchanger, and the shell-and-tube heat exchanger; the controller is also used to control the opening degree of the first throttle valve, the second throttle valve, and the third throttle valve.

[0019] Preferably, the first directional valve has a first mode A and a first mode B; the second directional valve has a second mode A and a second mode B;

[0020] The air handling system includes multiple air handling modes, and the first reversing valve and the second reversing valve being in different operating modes can enable the air handling system to be in different air handling modes.

[0021] Preferably, when the first reversing valve is in the first mode A, the fluid discharged from the exhaust port flows sequentially through the first reversing valve, the first heat exchanger, the first throttle valve, the second heat exchanger, and the first reversing valve before entering the enthalpy-increasing compressor through the air supply port;

[0022] When the first reversing valve is in the first mode B, the fluid discharged from the exhaust port flows sequentially through the first reversing valve, the second heat exchanger, the first throttle valve, the first heat exchanger, and the first reversing valve before entering the enthalpy-increasing compressor through the gas supply port.

[0023] When the second reversing valve is in the second mode A, the fluid discharged from the exhaust port can flow sequentially through the second reversing valve, the outdoor heat exchanger, the second throttle valve, the shell-and-tube heat exchanger, and the first reversing valve before entering the enthalpy-increasing compressor through the suction port; and / or, the fluid discharged from the exhaust port can flow sequentially through the second reversing valve, the outdoor heat exchanger, the third throttle valve, the third heat exchanger, and the second reversing valve before entering the enthalpy-increasing compressor through the suction port;

[0024] When the second reversing valve is in the second mode B, the fluid discharged from the exhaust port can flow sequentially through the second reversing valve, the shell-and-tube heat exchanger, the second throttle valve, the outdoor heat exchanger, and the first reversing valve before entering the enthalpy-increasing compressor through the suction port; and / or, the fluid discharged from the exhaust port can flow sequentially through the second reversing valve, the third heat exchanger, the third throttle valve, the outdoor heat exchanger, and the second reversing valve before entering the enthalpy-increasing compressor through the suction port.

[0025] Preferably, the air handling system includes a first air handling mode. When the air handling system is set to the first air handling mode, the first reversing valve is in the first mode B, the second reversing valve is in the second mode A, the third circuit is open, and the radiant pipe network is open.

[0026] The second heat exchanger releases heat and exhausts it to the outside. The first and third heat exchangers absorb heat to cool and dehumidify the fresh air entering the room. The radiant pipe network absorbs heat to cool the room.

[0027] Preferably, the air handling system includes a second air handling mode. When the air handling system is set to the second air handling mode, the first reversing valve is in the first mode B, the second reversing valve is in the second mode A, the third circuit is disconnected, and the radiant pipe network is opened.

[0028] The second heat exchanger releases heat to the outside, the first heat exchanger absorbs heat to cool and dehumidify the fresh air entering the room, and the radiant pipe network absorbs heat to cool the room.

[0029] Preferably, the air handling system includes a third air handling mode. When the air handling system is set to the third air handling mode, the first reversing valve is in the first mode B, the second reversing valve is in the second mode A, the third circuit is opened, and the radiant pipe network is disconnected.

[0030] The second heat exchanger releases heat that is discharged outdoors, while the first and third heat exchangers absorb heat to cool and dehumidify the fresh air entering the room.

[0031] Preferably, the air handling system includes a fourth air handling mode. When the air handling system is in the fourth air handling mode, the first reversing valve is in the first mode B, the second reversing valve is in the second mode B, the third circuit is open, and the radiant pipe network is disconnected.

[0032] The second heat exchanger releases heat and exhausts it to the outside, the first heat exchanger absorbs heat to cool and dehumidify the fresh air entering the room, and the third heat exchanger releases heat to heat and raise the temperature of the cooled and dehumidified fresh air.

[0033] Preferably, the air handling system includes a fifth air handling mode. When the air handling system is in the fifth air handling mode, the first reversing valve is in the first mode A, the second reversing valve is in the second mode B, the third circuit is open, and the radiant pipe network is open.

[0034] The first heat exchanger releases heat to warm the fresh air entering the room, and the third heat exchanger releases heat to warm the fresh air again; the radiant duct network releases heat to warm the room; and the second heat exchanger absorbs heat to cool the air exhausted outdoors.

[0035] Preferably, the air handling system includes a sixth air handling mode. When the air handling system is in the sixth air handling mode, the first reversing valve is in the first mode A, the second reversing valve is in the second mode A, the third circuit is disconnected, and the radiant pipe network is opened.

[0036] The first heat exchanger releases heat to warm the fresh air entering the room, and the radiant duct network releases heat to warm the room; the second heat exchanger absorbs heat to cool the air exhausted outdoors.

[0037] This invention organically combines a fresh air system and a radiant component using an enthalpy-increasing compressor. The flow direction of the refrigerant in the first circuit is controlled by a first reversing valve, and the flow direction of the refrigerant in the second circuit is controlled by a second reversing valve. This allows the first heat exchanger, the second heat exchanger, and the radiant component to operate in different states, thereby improving the functionality of the air handling system, enhancing its ability to process indoor air, reducing energy consumption, and improving the user experience. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the system in Embodiment 1 of the present invention;

[0039] Figure 2This is a schematic diagram of the system in Embodiment 2 of the present invention;

[0040] Figure 3 This is a schematic diagram of the system in Embodiment 3 of the present invention;

[0041] Figure 4 This is a schematic diagram of the system in Embodiment 4 of the present invention;

[0042] Figure 5 This is a schematic diagram of the system in Embodiment 5 of the present invention;

[0043] Figure 6 This is a schematic diagram of the system in Embodiment 6 of the present invention.

[0044] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention.

[0045] In the attached drawings: 1-compressor; 2-radiant assembly; 201-radiant piping network; 202-shell heat exchanger; 103-exhaust port; 101-first suction port; 102-second suction port; 301-first throttle valve; 302-second throttle valve; 303-third throttle valve; 401-first heat exchanger; 402-second heat exchanger; 403-third heat exchanger; 404-outdoor heat exchanger; 501-first circuit; 502-second circuit; 503-third circuit; 504-fourth circuit; 601-first reversing valve; 602-second reversing valve. Detailed Implementation

[0046] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0047] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence; "front end" and "back end" are relative. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0048] This invention relates to the field of air handling, and more particularly to a fresh air radiant air handling system. Conventional radiant systems require a long time to adjust the room temperature to the target temperature, and the radiant system directly cools the room air, making it prone to condensation and dripping water at the radiant terminals. Therefore, radiant systems are generally used in conjunction with multi-split air conditioning units. The cost of two sets of equipment is high, and the radiant system is basically not started during the transitional season, resulting in relatively low equipment utilization. To address the above problems, this invention utilizes a two-stage compression enthalpy-increasing compressor to organically combine the fresh air system and the radiant system, thereby improving the efficiency of air handling.

[0049] An air handling system, such as Figure 1-6 As shown, it includes: a fresh air system, including a first heat exchanger 401 and a second heat exchanger 402; a radiant assembly 2; a compressor 1, including an exhaust port 103, a first intake port 101 and a second intake port 102; a first circuit 501, the inlet end of the first circuit 501 being connected to the exhaust port 103 of the compressor 1, and the outlet end of the first circuit 501 being connected to the first intake port 101 of the compressor 1, the first heat exchanger 401 and the second heat exchanger 402 being disposed on the first circuit 501. It is also equipped with a first throttle valve 301 and a first reversing valve 601. The first throttle valve 301 is located between the first heat exchanger 401 and the second heat exchanger 402. The first reversing valve 601 is used to change the flow direction of the refrigerant in the first heat exchanger 401 and the second heat exchanger 402. The second circuit 502 has its inlet end connected to the exhaust port 103 of the compressor 1 and its outlet end connected to the second suction port 102 of the compressor 1. The radiant assembly 2 is disposed on the second circuit 502.

[0050] By changing the flow direction of the refrigerant in the first circuit 501, the functions of the first heat exchanger 401 and the second heat exchanger 402 are changed, enabling the air handling system to meet different needs and improving the functionality of the air handling system; the utilization rate of the refrigerant discharged by the compressor 1 is improved by the radiant assembly 2.

[0051] Preferably, the air handling system further includes an outdoor heat exchanger 404, a second throttle valve 302, and a second reversing valve 602 disposed on the second circuit 502. The second throttle valve 302 is located between the outdoor heat exchanger 404 and the radiant assembly 2, and the second reversing valve 602 is used to change the flow direction of the refrigerant in the outdoor heat exchanger 404.

[0052] The flow direction of the refrigerant in the refrigerant radiant assembly 2 and the outdoor heat exchanger 404 is changed by the reversing valve in the second section, thereby changing the function of the radiant assembly 2 and the outdoor heat exchanger 404 and improving the function of the radiant assembly 2.

[0053] Preferably, the fresh air system further includes a third heat exchanger 403; the air handling system further includes a third loop 503, the third heat exchanger 403 is disposed on the third loop 503, wherein the first end of the third loop 503 is connected to the loop between the second throttle valve 302 and the outdoor heat exchanger 404, the second end of the third loop 503 is connected to the loop between the second reversing valve 602 and the radiant assembly 2, and a third throttle valve 303 is disposed on the loop between the first end of the third loop 503 and the third heat exchanger 403.

[0054] The functionality of the fresh air system was improved by installing a third heat exchanger 403.

[0055] Preferably, the radiant assembly 2 includes a radiant pipe network 201 and a shell-and-tube heat exchanger 202, which are connected through a fourth loop 504. A water pump is installed on the fourth loop 504 to drive the fluid circulation within the fourth loop 504.

[0056] Preferably, the second loop 502 is coupled with the shell-and-tube heat exchanger 202 for heat exchange.

[0057] Preferably, compressor 1 is an enthalpy-increasing compressor 1, and the first suction port 101 is a gas replenishment port; the opening degree of the first throttle valve 301 is such that the pressure of the refrigerant entering the gas replenishment port is greater than the pressure of the refrigerant entering the second suction port 102.

[0058] Compressor 1 is configured as an enthalpy-increasing compressor, which improves the system's efficiency and reduces energy consumption.

[0059] Preferably, the air handling system further includes: a controller for controlling the first reversing valve 601 and the second reversing valve 602 to change their operating modes, thereby changing the flow direction of the refrigerant in the first heat exchanger 401, the second heat exchanger 402, the third heat exchanger 403, the outdoor heat exchanger 404, and the shell-and-tube heat exchanger 202; the controller is also used to control the opening degree of the first throttle valve 301, the second throttle valve 302, and the third throttle valve 303.

[0060] By controlling the first directional valve 601, the second directional valve 602, the first throttle valve 301, the second throttle valve 302, and the third throttle valve 303 with a controller, the control efficiency is improved.

[0061] Preferably, the first reversing valve 601 has a first mode A and a first mode B; the second reversing valve 602 has a second mode A and a second mode B; the air handling system includes multiple air handling modes, and the first reversing valve 601 and the second reversing valve 602 being in different operating modes can enable the air handling system to be in different air handling modes.

[0062] Preferably, when the first reversing valve 601 is in the first mode A, the fluid discharged from the exhaust port 103 flows sequentially through the first reversing valve 601, the first heat exchanger 401, the first throttle valve 301, the second heat exchanger 402, and the first reversing valve 601 before entering the enthalpy-increasing compressor 1 through the gas supply port; when the first reversing valve 601 is in the first mode B, the fluid discharged from the exhaust port 103 flows sequentially through the first reversing valve 601, the second heat exchanger 402, the first throttle valve 301, the first heat exchanger 401, and the first reversing valve 601 before entering the enthalpy-increasing compressor 1 through the gas supply port; when the second reversing valve 602 is in the second mode A, the fluid discharged from the exhaust port 103 can flow sequentially through the second reversing valve 602, the outdoor heat exchanger 404, the second throttle valve 302, the shell-and-tube heat exchanger 202, and the first reversing valve 601. After 1, the fluid enters the enthalpy-increasing compressor 1 through the suction port; and / or, the fluid discharged from the exhaust port 103 flows sequentially through the second reversing valve 602, the outdoor heat exchanger 404, the third throttle valve 303, the third heat exchanger 403, and the second reversing valve 602 before entering the enthalpy-increasing compressor 1 through the suction port; when the second reversing valve 602 is in the second mode B, the fluid discharged from the exhaust port 103 can flow sequentially through the second reversing valve 602, the shell-and-tube heat exchanger 202, the second throttle valve 302, the outdoor heat exchanger 404, and the first reversing valve 601 before entering the enthalpy-increasing compressor 1 through the suction port; and / or, the fluid discharged from the exhaust port 103 flows sequentially through the second reversing valve 602, the third heat exchanger 403, the third throttle valve 303, the outdoor heat exchanger 404, and the second reversing valve 602 before entering the enthalpy-increasing compressor 1 through the suction port.

[0063] Example 1:

[0064] like Figure 1 As shown, the air handling system includes a first air handling mode. When the air handling system is set to the first air handling mode, the first reversing valve 601 is in the first mode B, the second reversing valve 602 is in the second mode A, the third circuit 503 is open, and the radiant pipe network 201 is open. The second heat exchanger 402 releases heat and is discharged to the outside. The first heat exchanger 401 and the third heat exchanger 403 absorb heat to cool and dehumidify the fresh air entering the room, and the radiant pipe network 201 absorbs heat to cool the room.

[0065] The high-temperature, high-pressure refrigerant passing through the first reversing valve 601 releases heat as it passes through the second heat exchanger 402, transforming into a medium-temperature, high-pressure gas. This medium-temperature, high-pressure gas then passes through the first throttle valve 301, becoming a low-temperature, low-pressure gas-liquid two-phase refrigerant before entering the first heat exchanger 401 to absorb heat. The refrigerant passing through the second reversing valve 602 releases heat through the outdoor heat exchanger 404, transforming into a medium-temperature, high-pressure gas. One path of this gas enters the third loop 503, passing through the third throttle valve 303 and becoming a low-temperature, low-pressure two-phase refrigerant before entering the third heat exchanger 403 to absorb heat. The other path passes through the second throttle valve 302, becoming a low-temperature, low-pressure two-phase refrigerant and exchanging heat with the shell-and-tube heat exchanger 202 to cool the radiant pipe network 201 of the fourth loop 504. The water pumps on the radiant pipe network 201 then operate. The system allows fluid to flow within the radiant pipe network 201 and radiate heat outwards. This mode is used when users have high requirements for the indoor environment. Temperature sensors, humidity sensors, carbon dioxide detectors, and PM2.5 detectors can be installed indoors to monitor the indoor environment. When the indoor environment meets the set conditions, the air handling system is controlled to switch to this mode to treat the indoor environment. The first heat exchanger 401 and the third heat exchanger 403 condense, dehumidify, and cool the incoming fresh air, while the radiant pipe network 201 radiates and cools the indoor environment. At the same time, ventilation fans are installed indoors to improve the internal and external airflow. The first throttle valve 301, the second throttle valve 302, and the third throttle valve 303 ensure that the gas pressure entering the replenishment port through the first reversing valve 601 is greater than the gas pressure entering the second intake port 102 through the second reversing valve 602, thereby improving the working efficiency of the enthalpy-increasing compressor 1.

[0066] Example 2

[0067] like Figure 2 As shown, the air handling system includes a second air handling mode. When the air handling system is set to the second air handling mode, the first reversing valve 601 is in the first mode B, the second reversing valve 602 is in the second mode A, the third circuit 503 is disconnected, and the radiant pipe network 201 is opened. The second heat exchanger 402 releases heat to exhaust it to the outside, the first heat exchanger 401 absorbs heat to cool and dehumidify the fresh air entering the room, and the radiant pipe network 201 absorbs heat to cool the room.

[0068] When the high-temperature, high-pressure refrigerant passes through the first reversing valve 601 and then through the second heat exchanger 402, it releases heat and becomes a medium-temperature, high-pressure gas. This medium-temperature, high-pressure gas then passes through the first throttle valve 301 and becomes a low-temperature, low-pressure gas-liquid two-phase refrigerant, entering the first heat exchanger 401 where it absorbs heat. Similarly, the refrigerant passing through the second reversing valve 602 releases heat through the outdoor heat exchanger 404, becoming a medium-temperature, high-pressure gas. This medium-temperature, high-pressure gas then passes through the second throttle valve 302 and becomes a low-temperature, low-pressure two-phase refrigerant, exchanging heat with the shell-and-tube heat exchanger 202 to cool the radiant pipe network 201 of the fourth loop 504. The water pump on the radiant pipe network 201 operates, causing the fluid within the radiant pipe network 201 to flow and radiate heat outwards. When the user adjusts the air conditioning in the room... If the air quality requirements are not high and it is desired that the unit can operate at low energy consumption, this mode can be used. Temperature sensors, humidity sensors, carbon dioxide detectors, PM2.5 detectors, etc. can be installed indoors to monitor the indoor environment. When the indoor environment meets the set conditions, the air handling system is controlled to switch to this mode to treat the indoor environment. The first heat exchanger 401 condenses, dehumidifies, and cools the incoming fresh air, and the radiant pipe network 201 radiates and cools the indoor environment. At the same time, ventilation fans are installed indoors to improve the internal and external airflow. The first throttle valve 301 and the second throttle valve 302 make the gas pressure entering the replenishment port through the first reversing valve 601 greater than the gas pressure entering the second intake port 102 through the second reversing valve 602, thereby improving the working efficiency of the enthalpy-increasing compressor 1.

[0069] Example 3

[0070] like Figure 3 As shown, the air handling system includes a third air handling mode. When the air handling system is set to the third air handling mode, the first reversing valve 601 is in the first mode B, the second reversing valve 602 is in the second mode A, the third circuit 503 is open, and the radiant pipe network 201 is disconnected. The second heat exchanger 402 releases heat and is discharged to the outside. The first heat exchanger 401 and the third heat exchanger 403 absorb heat to cool and dehumidify the fresh air entering the room.

[0071] The high-temperature, high-pressure refrigerant passing through the first reversing valve 601 releases heat as it passes through the second heat exchanger 402, transforming into a medium-temperature, high-pressure gas. This medium-temperature, high-pressure gas then passes through the first throttle valve 301, becoming a low-temperature, low-pressure gas-liquid two-phase refrigerant before entering the first heat exchanger 401, where it absorbs heat. Similarly, the refrigerant passing through the second reversing valve 602 releases heat through the outdoor heat exchanger 404, transforming into a medium-temperature, high-pressure gas. This medium-temperature, high-pressure gas then enters the third circuit 503, passing through the third throttle valve 303, becoming a low-temperature, low-pressure two-phase refrigerant before entering the third heat exchanger 403, where it absorbs heat. This mode is suitable for situations where the system is just turned on or when indoor air humidity is high, and where heat absorption is required. The system can cool multiple rooms simultaneously; it can effectively and quickly dehumidify the indoor environment; temperature sensors, humidity sensors, carbon dioxide detectors, PM2.5 detectors, etc., can be installed indoors to monitor the indoor environment. When the indoor environment meets the set conditions, the air handling system is controlled to switch to this mode to treat the indoor environment; the first heat exchanger 401 and the third heat exchanger 403 condense, dehumidify, and cool the fresh air entering the room, while ventilation fans are installed indoors to improve the internal and external airflow; the first throttle valve 301 and the third throttle valve 303 ensure that the gas pressure entering the replenishment port through the first reversing valve 601 is greater than the gas pressure entering the second intake port 102 through the second reversing valve 602, thereby improving the working efficiency of the enthalpy-increasing compressor 1.

[0072] Example 4

[0073] like Figure 4 As shown, the air handling system includes a fourth air handling mode. When the air handling system is in the fourth air handling mode, the first reversing valve 601 is in the first mode B, the second reversing valve 602 is in the second mode B, the third circuit 503 is open, and the radiant pipe network 201 is disconnected. The second heat exchanger 402 releases heat and is discharged to the outside. The first heat exchanger 401 absorbs heat to cool and dehumidify the fresh air entering the room. The third heat exchanger 403 releases heat to heat and raise the temperature of the cooled and dehumidified fresh air.

[0074] The high-temperature, high-pressure refrigerant passing through the first reversing valve 601 releases heat as it passes through the second heat exchanger 402, transforming into a medium-temperature, high-pressure gas. This medium-temperature, high-pressure gas then passes through the first throttle valve 301, becoming a low-temperature, low-pressure two-phase gas-liquid refrigerant before entering the first heat exchanger 401, where it absorbs heat. Similarly, the refrigerant passing through the second reversing valve 602 passes through the third circuit 503 and enters the third heat exchanger 403, releasing heat. The high-temperature, high-pressure gas then becomes a medium-temperature, high-pressure gas, which, after passing through the third throttle valve 303, becomes a low-temperature, low-pressure two-phase refrigerant before entering the outdoor heat exchanger 404. This mode is suitable for transitional seasons, where dehumidification is needed but indoor temperature adjustment is not required. It can be installed indoors... The system is equipped with temperature sensors, humidity sensors, carbon dioxide detectors, and PM2.5 detectors to monitor the indoor environment. When the indoor environment meets the set conditions, the air handling system is switched to this mode to treat the indoor environment. The first heat exchanger 401 condenses, dehumidifies, and cools the incoming fresh air, while the third heat exchanger 403 heats up the cooled and dehumidified air. At the same time, ventilation fans are installed indoors to improve the internal and external airflow. The first throttle valve 301, the second throttle valve 302, and the third throttle valve 303 ensure that the gas pressure entering the replenishment port through the first reversing valve 601 is greater than the gas pressure entering the second intake port 102 through the second reversing valve 602, thereby improving the working efficiency of the enthalpy-increasing compressor 1.

[0075] Example 5

[0076] like Figure 5 As shown, the air handling system includes a fifth air handling mode. When the air handling system is in the fifth air handling mode, the first reversing valve 601 is in the first mode A, the second reversing valve 602 is in the second mode B, the third circuit 503 is open, and the radiant duct network 201 is open. The first heat exchanger 401 releases heat to heat the fresh air entering the room, and the third heat exchanger 403 releases heat to heat the fresh air again. The radiant duct network 201 releases heat to heat the room. The second heat exchanger 402 absorbs heat to cool the air exhausted to the outside.

[0077] When the high-temperature, high-pressure refrigerant passes through the first reversing valve 601 and then through the first heat exchanger 401, it releases heat and becomes a medium-temperature, high-pressure gas. This medium-temperature, high-pressure gas then passes through the first throttling valve 301 and becomes a low-temperature, low-pressure gas-liquid two-phase refrigerant, entering the second heat exchanger 402 where it absorbs heat. The refrigerant passing through the second reversing valve 602 passes through the third loop 503 and enters the third heat exchanger 403, releasing heat. The high-temperature, high-pressure gas becomes a medium-temperature, high-pressure gas, which then passes through the third throttling valve 303 and becomes a low-temperature, low-pressure two-phase refrigerant, entering the outdoor heat exchanger 404. Another path enters the shell-and-tube heat exchanger 202, where it exchanges heat with the radiant pipe network 201 of the fourth loop 504 and releases heat. The refrigerant after passing through the shell-and-tube heat exchanger 202 enters the outdoor heat exchanger 404, absorbing heat and becoming a low-pressure, low-temperature gaseous refrigerant. This mode is suitable for heating when the unit is first turned on, when rapid heating and ventilation are needed indoors. Temperature sensors, humidity sensors, carbon dioxide detectors, and PM2.5 detectors can be installed indoors to monitor the indoor environment. When the indoor environment meets the set conditions, the air handling system is controlled to switch to this mode to treat the indoor environment. The first heat exchanger 401 heats the incoming fresh air, the third heat exchanger 403 heats the heated air, and the radiant pipe network 201 provides radiant heating to the room. At the same time, ventilation fans are installed indoors to improve the internal and external airflow. The first throttle valve 301, the second throttle valve 302, and the third throttle valve 303 ensure that the gas pressure entering the replenishment port through the first reversing valve 601 is greater than the gas pressure entering the second intake port 102 through the second reversing valve 602, thereby improving the working efficiency of the enthalpy-increasing compressor 1.

[0078] Example 6

[0079] like Figure 6 As shown, the air handling system includes a sixth air handling mode. When the air handling system is in the sixth air handling mode, the first reversing valve 601 is in the first mode A, the second reversing valve 602 is in the second mode A, the third circuit 503 is disconnected, and the radiant duct network 201 is opened. The first heat exchanger 401 releases heat to heat the fresh air entering the room, and the radiant duct network 201 releases heat to heat the room. The second heat exchanger 402 absorbs heat to cool the air exhausted to the outside.

[0080] The high-temperature, high-pressure refrigerant passing through the first reversing valve 601 releases heat as it passes through the first heat exchanger 401, transforming into a medium-temperature, high-pressure gas. This gas then passes through the first throttling valve 301, becoming a low-temperature, low-pressure gas-liquid two-phase refrigerant before entering the second heat exchanger 402, where it absorbs heat. The refrigerant passing through the second reversing valve 602 enters the shell-and-tube heat exchanger 202, where it exchanges heat with the radiant piping network 201 of the fourth circuit 504 and releases heat. After passing through the shell-and-tube heat exchanger 202, the refrigerant enters the outdoor heat exchanger 404, absorbs heat, and becomes a low-pressure, low-temperature gaseous refrigerant. This mode is suitable for scenarios where indoor environmental requirements are not high, or where excessive heating is not necessary, and can achieve indoor temperature control with relatively low power consumption. The system heats the air inside the room. Temperature sensors, humidity sensors, carbon dioxide detectors, and PM2.5 detectors can be installed indoors to monitor the indoor environment. When the indoor environment meets the set conditions, the air handling system is controlled to switch to this mode to treat the indoor environment. The first heat exchanger 401 heats the incoming fresh air, and the radiant pipe network 201 radiates heat into the room. At the same time, ventilation fans are installed indoors to improve the internal and external airflow. The first throttle valve 301, the second throttle valve 302, and the third throttle valve 303 ensure that the gas pressure entering the replenishment port through the first reversing valve 601 is greater than the gas pressure entering the second intake port 102 through the second reversing valve 602, thereby improving the working efficiency of the enthalpy-increasing compressor 1.

[0081] This invention organically combines a fresh air system and a radiant component 2 using an enthalpy-increasing compressor 1. The flow direction of the refrigerant in the first circuit 501 is controlled by a first reversing valve 601, and the flow direction of the refrigerant in the second circuit 502 is controlled by a second reversing valve 602. This allows the first heat exchanger 401, the second heat exchanger 402, and the radiant component 2 to operate in different states, thereby improving the functionality of the air handling system. Furthermore, the first throttling valve 301, the second throttling valve 302, and the third throttling valve 303 ensure that the intake pressure at the enthalpy-increasing compressor 1's air inlet is greater than the intake pressure at the second air intake 102. This effectively guarantees that the enthalpy-increasing compressor 1 can operate at high efficiency, reducing power consumption while improving indoor air handling capacity and enhancing the user experience.

[0082] Exemplary embodiments of this disclosure have been specifically shown and described above. It should be understood that this disclosure is not limited to the detailed structures, arrangements, or implementations described herein; rather, this disclosure is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended claims.

Claims

1. A fresh air radiant air handling system, characterized in that, include: The fresh air system includes a first heat exchanger and a second heat exchanger; A radiant assembly, comprising a radiant piping network and a shell-and-tube heat exchanger; The compressor includes an exhaust port, a first intake port, and a second intake port; The first circuit has an inlet end connected to the exhaust port of the compressor and an outlet end connected to the first suction port of the compressor. The first heat exchanger and the second heat exchanger are arranged on the first circuit. The first circuit is also provided with a first throttle valve and a first reversing valve. The first throttle valve is located between the first heat exchanger and the second heat exchanger. The first reversing valve is used to change the flow direction of the refrigerant in the first heat exchanger and the second heat exchanger. The second circuit has an inlet end connected to the exhaust port of the compressor and an outlet end connected to the second suction port of the compressor. The radiant assembly is installed on the second circuit. The second circuit is equipped with an outdoor heat exchanger, a second throttle valve, and a second reversing valve. The second throttle valve is located between the outdoor heat exchanger and the radiant assembly. The second reversing valve is used to change the flow direction of the refrigerant in the outdoor heat exchanger. The air handling system also includes: A third heat exchanger and a third circuit, wherein the third heat exchanger is disposed on the third circuit, wherein the first end of the third circuit is connected to the circuit between the second throttling valve and the outdoor heat exchanger, the second end of the third circuit is connected to the circuit between the second reversing valve and the radiant assembly, and a third throttling valve is disposed on the circuit between the first end of the third circuit and the third heat exchanger.

2. The air handling system according to claim 1, characterized in that, The radiant pipe network and the shell-and-tube heat exchanger are connected through a fourth loop, on which a water pump is installed to drive the fluid circulation within the fourth loop.

3. The air handling system according to claim 2, characterized in that, The second circuit is coupled with the shell-and-tube heat exchanger for heat exchange.

4. The air handling system according to claim 1, characterized in that, The compressor is an enthalpy-increasing compressor, and the first suction port is a gas supply port; The opening of the first throttle valve is such that the pressure of the refrigerant entering the air supply port is greater than the pressure of the refrigerant entering the second air intake port.

5. The air handling system according to claim 4, characterized in that, The air handling system also includes: The controller is used to control the first reversing valve and the second reversing valve to change their operating modes, thereby changing the flow direction of the refrigerant in the first heat exchanger, the second heat exchanger, the third heat exchanger, the outdoor heat exchanger, and the shell-and-tube heat exchanger; the controller is also used to control the opening degree of the first throttle valve, the second throttle valve, and the third throttle valve.

6. The air handling system according to claim 5, characterized in that, The first directional valve has a first mode A and a first mode B; the second directional valve has a second mode A and a second mode B; The air handling system includes multiple air handling modes, and the first reversing valve and the second reversing valve being in different operating modes can enable the air handling system to be in different air handling modes.

7. The air handling system according to claim 6, characterized in that, When the first reversing valve is in the first mode A, the fluid discharged from the exhaust port flows sequentially through the first reversing valve, the first heat exchanger, the first throttle valve, the second heat exchanger, and the first reversing valve before entering the enthalpy-increasing compressor through the gas supply port. When the first reversing valve is in the first mode B, the fluid discharged from the exhaust port flows sequentially through the first reversing valve, the second heat exchanger, the first throttle valve, the first heat exchanger, and the first reversing valve before entering the enthalpy-increasing compressor through the gas supply port. When the second reversing valve is in the second mode A, the fluid discharged from the exhaust port flows sequentially through the second reversing valve, the outdoor heat exchanger, the second throttle valve, the shell-and-tube heat exchanger, and the second reversing valve before entering the enthalpy-increasing compressor through the suction port; And / or, the fluid discharged from the exhaust port flows sequentially through the second reversing valve, the outdoor heat exchanger, the third throttle valve, the third heat exchanger, and the second reversing valve before entering the enthalpy-increasing compressor through the intake port; When the second reversing valve is in the second mode B, the fluid discharged from the exhaust port can flow sequentially through the second reversing valve, the shell-and-tube heat exchanger, the second throttle valve, the outdoor heat exchanger, and the second reversing valve before entering the enthalpy-increasing compressor through the intake port; And / or, the fluid discharged from the exhaust port flows sequentially through the second reversing valve, the third heat exchanger, the third throttle valve, the outdoor heat exchanger, and the second reversing valve before entering the enthalpy-increasing compressor through the intake port.

8. The air handling system according to claim 7, characterized in that, The air handling system includes a first air handling mode. When the air handling system is set to the first air handling mode, the first reversing valve is in the first mode B, the second reversing valve is in the second mode A, the third circuit is open, and the radiant pipe network is open. The second heat exchanger releases heat and exhausts it to the outside. The first and third heat exchangers absorb heat to cool and dehumidify the fresh air entering the room. The radiant pipe network absorbs heat to cool the room.

9. The air handling system according to claim 7, characterized in that, The air handling system includes a second air handling mode. When the air handling system is set to the second air handling mode, the first reversing valve is in the first mode B, the second reversing valve is in the second mode A, the third circuit is disconnected, and the radiant pipe network is opened. The second heat exchanger releases heat to the outside, the first heat exchanger absorbs heat to cool and dehumidify the fresh air entering the room, and the radiant pipe network absorbs heat to cool the room.

10. The air handling system according to claim 7, characterized in that, The air handling system includes a third air handling mode. When the air handling system is set to the third air handling mode, the first reversing valve is in the first mode B, the second reversing valve is in the second mode A, the third circuit is opened, and the radiant pipe network is disconnected. The second heat exchanger releases heat that is discharged outdoors, while the first and third heat exchangers absorb heat to cool and dehumidify the fresh air entering the room.

11. The air handling system according to claim 7, characterized in that, The air handling system includes a fourth air handling mode. When the air handling system is in the fourth air handling mode, the first reversing valve is in the first mode B, the second reversing valve is in the second mode B, the third circuit is open, and the radiant pipe network is disconnected. The second heat exchanger releases heat and exhausts it to the outside, the first heat exchanger absorbs heat to cool and dehumidify the fresh air entering the room, and the third heat exchanger releases heat to heat and raise the temperature of the cooled and dehumidified fresh air.

12. The air handling system according to claim 7, characterized in that, The air handling system includes a fifth air handling mode. When the air handling system is in the fifth air handling mode, the first reversing valve is in the first mode A, the second reversing valve is in the second mode B, the third circuit is open, and the radiant pipe network is open. The first heat exchanger releases heat to warm the fresh air entering the room, and the third heat exchanger releases heat to warm the fresh air again; the radiant duct network releases heat to warm the room; and the second heat exchanger absorbs heat to cool the air exhausted outdoors.

13. The air handling system according to claim 7, characterized in that, The air handling system includes a sixth air handling mode. When the air handling system is in the sixth air handling mode, the first reversing valve is in the first mode A, the second reversing valve is in the second mode A, the third circuit is disconnected, and the radiant pipe network is opened. The first heat exchanger releases heat to warm the fresh air entering the room, and the radiant duct network releases heat to warm the room; the second heat exchanger absorbs heat to cool the air exhausted outdoors.

Images