Indoor air handling system and method of controlling the same

Abstract

The application discloses an indoor air treatment system and a control method thereof. The indoor air treatment system comprises an outdoor unit, an indoor air treatment main unit, an indoor air delivery end and an indoor radiation end. The indoor air treatment main unit comprises a first heat exchanger and a second heat exchanger. The first heat exchanger comprises a first refrigerant flow channel, and the second heat exchanger comprises a second refrigerant flow channel. The first refrigerant flow channel and the second refrigerant flow channel are connected with the outdoor unit. The first heat exchanger further comprises a water flow channel. Water in the water flow channel can exchange heat with refrigerant in the first refrigerant flow channel. The water flow channel is connected with the indoor radiation end. The second heat exchanger further comprises an air flow channel. Air flowing through the air flow channel can exchange heat with refrigerant in the second refrigerant flow channel. In the application, air and radiation jointly bear the load, thereby overcoming the respective disadvantages of the existing all-air system and the radiation + fresh air system, and improving the user experience.

Description

Technical Field

[0001] This invention relates to the field of indoor air treatment technology, and in particular to an indoor air treatment system and its control method. Background Technology

[0002] Existing air handling systems mainly include: all-air systems and radiant + fresh air systems. All-air systems rely entirely on air for both heating and cooling loads and heat exchange rates, resulting in issues such as large air volume, thick ductwork, and difficulty in drilling through walls for installation, and also generating indoor noise. Radiant + fresh air systems, on the other hand, handle the heating and cooling loads through radiation, while the fresh air system only handles the humidity load and air exchange rate. This results in slow system response to heating and cooling, high humidity control requirements (the system cannot be opened at high humidity), high room airtightness requirements, and limited user access to doors and windows.

[0003] Overall, there is still much room for improvement in existing air handling systems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an indoor air treatment system and its control method. By having air and radiation share the load, it overcomes the drawbacks of existing all-air systems and radiation + fresh air systems, thereby improving the user experience.

[0005] The specific technical solution of the embodiments of the present invention is as follows:

[0006] An indoor air handling system includes an outdoor unit, an indoor air handling unit, an indoor air delivery terminal, and an indoor radiant terminal. The indoor air handling unit includes a first heat exchanger and a second heat exchanger. The first heat exchanger includes a first refrigerant channel, and the second heat exchanger includes a second refrigerant channel. The first and second refrigerant channels are connected to a refrigerant inlet and a refrigerant outlet of the outdoor unit. The refrigerant output from the refrigerant outlet can be selectively distributed to the first and / or second refrigerant channels. The first heat exchanger further includes a water channel, in which water can exchange heat with refrigerant in the first refrigerant channel, and the water channel can be connected to the inlet and outlet of the indoor radiant terminal; the second heat exchanger further includes an air channel, in which air flowing through the air channel can exchange heat with refrigerant in the second refrigerant channel; the indoor air handling unit includes an air inlet, an air outlet and a fan, in which air flowing in from the air inlet can flow through the air channel under the drive of the fan and then flow out from the air outlet to the indoor air delivery terminal.

[0007] In a preferred embodiment, the indoor air handling unit includes a refrigerant flow distribution component for distributing refrigerant output from the refrigerant outlet between the first refrigerant channel and the second refrigerant channel.

[0008] In a preferred embodiment, the indoor air handling system further includes an air quality detection device for detecting the temperature and / or humidity and / or cleanliness of the indoor air. The outdoor unit contains only one compressor, and the refrigerant flow distribution component can distribute the refrigerant output from the refrigerant outlet of the compressor between the first refrigerant flow channel and the second refrigerant flow channel based on the detected temperature and / or humidity and / or cleanliness of the indoor air.

[0009] In a preferred embodiment, the indoor air handling system further includes a forced convection heat exchange terminal, and the water channel can be connected to the inlet and outlet of the forced convection heat exchange terminal.

[0010] In a preferred embodiment, the forced convection heat exchange terminal includes a fan coil unit and / or a cooling beam; the indoor radiant terminal includes a floor radiant terminal and / or a ceiling radiant terminal; and the indoor air delivery terminal includes a duct.

[0011] In a preferred embodiment, the forced convection heat exchange terminal includes a fan coil unit, the indoor radiant terminal includes a floor radiant terminal, and the indoor air delivery terminal includes an air duct; the fan coil unit is located in the dynamic zone and / or static zone of the room, the floor radiant terminal is located in the dynamic zone and static zone of the room, and the air duct is located in the dynamic zone and static zone of the room.

[0012] In a preferred embodiment, the indoor radiant terminal includes a ceiling radiant terminal and a floor radiant terminal, and the indoor air delivery terminal includes a duct; the ceiling radiant terminal includes a capillary tube; the ceiling radiant terminal, the floor radiant terminal, and the duct are all located in the active and quiet zones of the room.

[0013] In a preferred embodiment, the indoor radiant terminal includes a ceiling radiant terminal, and the indoor air delivery terminal includes a duct; the ceiling radiant terminal includes a capillary tube; both the ceiling radiant terminal and the duct are located in the active and quiet zones of the room.

[0014] In a preferred embodiment, the air inlet includes a fresh air inlet and a return air inlet. The fresh air inlet is used to connect to the outside to introduce outdoor air, and the return air inlet is used to connect to the inside to introduce indoor air into the indoor air handling unit. The fresh air inlet and the return air inlet can be opened simultaneously to mix the outdoor air and the indoor air in the indoor air handling unit.

[0015] In a preferred embodiment, the fresh air inlet and / or the return air inlet are provided with a flow regulating device, which is used to regulate the mixing ratio of the outdoor air and the indoor air.

[0016] In a preferred embodiment, the fan includes a fresh air fan and a supply air fan, which can be turned on simultaneously. The fresh air fan is used to introduce outdoor air into the indoor air handling unit, and the supply air fan is used to deliver the mixed outdoor air and indoor air to the indoor air delivery terminal.

[0017] In a preferred embodiment, the indoor air handling system further includes a damper capable of regulating gas flow, the indoor air delivery terminal includes a duct, the damper is disposed on the duct, and the damper can control the gas flow to the room based on the detected temperature and / or humidity and / or cleanliness of the indoor air.

[0018] In a preferred embodiment, there are multiple air ducts leading to multiple indoor areas, and correspondingly, there are multiple air valves; there are multiple air quality detection devices installed in the multiple indoor areas; the air valves control the gas flow rate to the area where the air quality detection device is located based on the temperature and / or humidity and / or cleanliness of the indoor air in the area where the air quality detection device is located.

[0019] In a preferred embodiment, the indoor air handling unit includes a separate main unit processing module and an air supply module. The main unit processing module has a first housing, in which a first heat exchanger and a second heat exchanger are disposed, and an air inlet is disposed on the first housing. The air supply module has a second housing, in which a fan is disposed, and an air outlet is disposed on the second housing. The first housing is also provided with an exhaust port, and the second housing is also provided with an air inlet. The exhaust port and the air inlet are connected by a pipeline.

[0020] In a preferred embodiment, the main unit processing module is at least partially disposed in the lower part of the ceiling, and the air supply module is entirely disposed in the upper part of the ceiling or partially disposed in the upper part of the ceiling.

[0021] In a preferred embodiment, the main processing module is mounted against a wall and is arranged horizontally, with the first heat exchanger and the second heat exchanger arranged horizontally within the first housing.

[0022] In a preferred embodiment, the first housing has a lateral dimension in the transverse direction and a longitudinal dimension in the longitudinal direction, wherein the lateral dimension is greater than the longitudinal dimension.

[0023] In a preferred embodiment, the first refrigerant channel of the first heat exchanger has a first refrigerant inlet and a first refrigerant outlet, the second refrigerant channel of the second heat exchanger has a second refrigerant inlet and a second refrigerant outlet, the water channel has a water channel inlet and a water channel outlet, the air inlet includes a fresh air inlet and a return air inlet, the fresh air inlet and the exhaust air inlet are both located on the top wall of the first housing, the first refrigerant channel, the second refrigerant channel and the water channel all pass through the top wall of the first housing, or the first refrigerant channel, the second refrigerant channel and the water channel are all located inside the first housing and the refrigerant channel of the outdoor unit passes through the top wall of the first housing, and the return air inlet is located on the side wall or bottom wall of the first housing.

[0024] In a preferred embodiment, the distance between the front sidewall of the first housing and the wall is 500 mm to 600 mm; the distance between the bottom wall of the first housing and the ground is 1.6 m to 1.8 m.

[0025] In a preferred embodiment, the host processing module further includes an air purification unit, which is disposed between the air inlet and the second heat exchanger and / or between the second heat exchanger and the air outlet. The air purification unit, the first heat exchanger, and the second heat exchanger are arranged laterally in the first housing. The front sidewall of the first housing is detachable or openable for removing the air purification unit.

[0026] In a preferred embodiment, the air inlet includes a fresh air inlet and a return air inlet, and the air inlet, the first heat exchanger, the second heat exchanger, and the air purification unit are arranged in sequence along the direction of air flow.

[0027] In a preferred embodiment, the first heat exchanger is vertically disposed close to or adjacent to the rear or front sidewall of the first housing.

[0028] In a preferred embodiment, the air supply module includes a fan box and an air supply fan, the air supply fan being disposed inside the fan box, and the rotation axis of the impeller of the air supply fan extending in the longitudinal direction.

[0029] In a preferred embodiment, the blower includes a first volute, a first impeller disposed within the first volute, a second volute, and a second impeller disposed within the second volute. The rotation axes of the first impeller and the second impeller are offset and both extend in the longitudinal direction. At least a portion of the front portion of the first volute's enclosure and at least a portion of the rear portion of the second volute's enclosure are the same plate, or at least a portion of the front portion of the first volute's enclosure and at least a portion of the rear portion of the second volute's enclosure are different plates that are close to each other.

[0030] In a preferred embodiment, the fan box is horizontally placed above the suspended ceiling, and a first air inlet is provided on each of the two adjacent sides of the fan box. The fan box also includes a sealing plate. When one of the first air inlets is connected to the exhaust outlet through the pipeline, the sealing plate is used to block the other first air inlet.

[0031] In a preferred embodiment, the host processing module further includes a wet film humidifier disposed within the first housing. The wet film humidifier is connected to a purified water inflow pipe, through which purified water flows into the wet film humidifier. The purified water inflow pipe passes through the top wall of the first housing, and a solenoid valve is also disposed on the purified water inflow pipe for controlling the opening and closing of the purified water inflow pipe.

[0032] In a preferred embodiment, the host processing module further includes an air purification unit, and the air inlet includes a fresh air inlet and a return air inlet. Along the direction of air flow, the air inlet, the first heat exchanger, the second heat exchanger, the wet film humidifier, and the air purification unit are arranged in sequence.

[0033] In a preferred embodiment, the host processing module further includes a first water receiving tray located below the first heat exchanger and the second heat exchanger, for receiving condensate from the first heat exchanger and the second heat exchanger. Alternatively, the host processing module further includes a first water receiving tray and a wet film humidifier, with the first water receiving tray located below the first heat exchanger, the second heat exchanger, and the wet film humidifier, for receiving condensate from the first heat exchanger, the second heat exchanger, and the wet film humidifier.

[0034] In a preferred embodiment, the host processing module further includes a second water receiving tray, which is located below the first water receiving tray and the downward projection of the first water receiving tray falls entirely into the second water receiving tray. The first water receiving tray has a first drain pipe, and the second water receiving tray has a second drain pipe. The first drain pipe is inserted into the second drain pipe and is spaced apart from the outer wall of the first drain pipe and the inner wall of the second drain pipe.

[0035] A control method for an indoor air handling system based on any of the above-described indoor air handling systems, the indoor air handling system comprising an outdoor unit, an indoor air handling unit, an indoor air delivery terminal, and an indoor radiant terminal; the indoor air handling unit comprising a first heat exchanger and a second heat exchanger, the first heat exchanger comprising a first refrigerant channel, the second heat exchanger comprising a second refrigerant channel, the first refrigerant channel and the second refrigerant channel being connected to a refrigerant inlet and a refrigerant outlet of the outdoor unit, the refrigerant output from the refrigerant outlet being selectively distributed to the first refrigerant channel and / or the second refrigerant channel; the first heat exchanger further comprising a water channel, the water in the water channel being able to exchange heat with the refrigerant in the first refrigerant channel, the water channel being connected to the inlet and outlet of the indoor radiant terminal; the second heat exchanger further comprising an air channel, the air flowing through the air channel being able to exchange heat with the refrigerant in the second refrigerant channel. The indoor air handling unit includes an air inlet, an air outlet, and a fan. Air flowing in from the air inlet is driven by the fan to flow through the air channel and then flows out from the air outlet to the indoor air delivery terminal. The indoor air handling system also includes an air quality detection device for detecting indoor air parameters. The system also includes a valve for adjusting gas flow. The indoor air delivery terminal includes a duct, and the valve is mounted on the duct. The air inlet includes a fresh air inlet and a return air inlet. The fresh air inlet is connected to the outside to introduce outdoor air, and the return air inlet is connected to the inside to introduce indoor air into the indoor air handling unit. The fresh air inlet and the return air inlet can be open simultaneously to mix the outdoor air and indoor air in the indoor air handling unit. The control method includes:

[0036] Obtain the current indoor air parameters;

[0037] If the current indoor air parameters do not meet the preset air parameters, control the refrigerant output from the refrigerant outlet to distribute it to the first refrigerant channel and the second refrigerant channel, and control the operation of the fan and / or the air valve.

[0038] Monitor subsequent changes in the aforementioned indoor air parameters;

[0039] Based on subsequent changes in the indoor air parameters, the refrigerant distributed to the first and second refrigerant channels is adjusted, and / or the operating status of the fan and / or the air valve is adjusted.

[0040] In a preferred embodiment, the indoor air parameters include temperature, humidity, and cleanliness; the method specifically involves, when the temperature, humidity, and cleanliness do not meet the preset air parameters, simultaneously supplying the refrigerant output from the refrigerant outlet to the first refrigerant channel and the second refrigerant channel, turning on the fan, and opening the air valve.

[0041] In a preferred embodiment, the method further includes: when the temperature and humidity meet preset air parameters and the cleanliness does not meet preset air parameters, reducing but not stopping or stopping the refrigerant supply to the first refrigerant channel, reducing but not stopping the refrigerant supply to the second refrigerant channel, increasing the fan speed and / or increasing the opening of the air valve.

[0042] In a preferred embodiment, the fan includes a fresh air fan and a supply air fan, which can be turned on simultaneously. The fresh air fan is used to introduce outdoor air into the indoor air handling unit, and the supply air fan is used to deliver the mixed outdoor air and indoor air to the indoor air delivery terminal.

[0043] The method further includes: when the temperature, humidity, and cleanliness all meet preset air parameters, reducing or stopping the refrigerant supply to the first refrigerant channel, reducing or stopping the refrigerant supply to the second refrigerant channel, reducing the speed of the fresh air fan and controlling the fresh air fan to continue working, reducing the speed of the supply air fan and / or reducing the opening of the air valve and continuing to control the supply air fan and the air valve to continue working.

[0044] In a preferred embodiment, the fan includes a fresh air fan and a supply air fan, which can be turned on simultaneously. The fresh air fan is used to introduce outdoor air into the indoor air handling unit, and the supply air fan is used to deliver the mixed outdoor air and indoor air to the indoor air delivery terminal.

[0045] The method further includes: when the temperature and humidity do not meet the preset air parameters and the cleanliness meets the preset air parameters, continuing to supply refrigerant to the first refrigerant channel and the second refrigerant channel, reducing the speed of the fresh air fan, increasing the speed of the supply air fan and / or the opening of the air valve.

[0046] In a preferred embodiment, the fan includes a fresh air fan and a supply air fan, which can be turned on simultaneously. The fresh air fan is used to introduce outdoor air into the indoor air handling unit, and the supply air fan is used to deliver the mixed outdoor air and indoor air to the indoor air delivery terminal.

[0047] The method further includes: when the temperature and the cleanliness do not meet the preset air parameters and the humidity meets the preset air parameters, continuing to supply refrigerant to the first refrigerant channel and the second refrigerant channel, increasing the speed of the fresh air fan, increasing the speed of the supply air fan and / or the opening of the air valve.

[0048] In a preferred embodiment, the fan includes a fresh air fan and a supply air fan, which can be turned on simultaneously. The fresh air fan is used to introduce outdoor air into the indoor air handling unit, and the supply air fan is used to deliver the mixed outdoor air and indoor air to the indoor air delivery terminal.

[0049] The method further includes: when the humidity and the cleanliness both meet the preset air parameters and the temperature does not meet the preset air parameters, continuing to supply refrigerant to the first refrigerant channel and the second refrigerant channel, reducing the speed of the fresh air fan, increasing the speed of the supply air fan and / or the opening of the air valve.

[0050] In a preferred embodiment, the fan includes a fresh air fan and a supply air fan, which can be turned on simultaneously. The fresh air fan is used to introduce outdoor air into the indoor air handling unit, and the supply air fan is used to deliver the mixed outdoor air and indoor air to the indoor air delivery terminal.

[0051] The method further includes: when the humidity and the cleanliness do not meet the preset air parameters and the temperature meets the preset air parameters, reducing but not stopping the supply of refrigerant to the first refrigerant channel and the second refrigerant channel, increasing the speed of the fresh air fan, increasing the speed of the supply air fan and / or the opening of the air valve.

[0052] In a preferred embodiment, the fan includes a fresh air fan and a supply air fan, which can be turned on simultaneously. The fresh air fan is used to introduce outdoor air into the indoor air handling unit, and the supply air fan is used to deliver the mixed outdoor air and indoor air to the indoor air delivery terminal.

[0053] The method further includes: when the temperature and the cleanliness both meet the preset air parameters and the humidity does not meet the preset air parameters, reducing but not stopping the supply of refrigerant to the first refrigerant channel and the second refrigerant channel, reducing the speed of the fresh air fan and controlling the fresh air fan to continue to work, reducing the speed of the supply air fan and / or reducing the opening of the air valve and continuing to control the supply air fan and the air valve to continue to work.

[0054] The technical solution of the present invention has the following significant beneficial effects:

[0055] The indoor air handling system provided in this application embodiment utilizes an outdoor unit (which can be the same outdoor unit) to supply refrigerant with cooling or heating capacity to the first and second heat exchangers of the indoor air handling unit. This enables the indoor radiant terminals connected to the first heat exchanger to release cooling or heating capacity into the room to regulate the indoor temperature, and enables the indoor air delivery terminals connected to the second heat exchanger to blow cool or hot air into the room to regulate the indoor temperature, humidity, and air cleanliness. During the indoor air handling process, the radiant energy of the indoor radiant terminals and the air blown by the indoor air delivery terminals share the load, offering the following advantages:

[0056] Compared to existing single all-air systems, the technical solution provided in this application reduces the overall air volume, makes the ducts thinner, and facilitates passage through beams. This solves the pain points of existing single all-air systems where the cooling and heating loads and heat exchange times are all borne by the air, resulting in large air volume, thick ducts, and difficulties in drilling through walls for installation. Especially for single-level scenarios, this application can overcome the drawback of existing all-air systems where the large diameter ducts occupy space and height, making it impossible for all-air systems to be applied in single-level scenarios with limited floor height.

[0057] Compared to existing radiant + fresh air systems (where only radiation handles the heating and cooling loads), the technical solution provided in this application enhances natural indoor convection, reduces the vertical temperature difference between radiant heating and cooling, and results in a more uniform temperature distribution. Furthermore, the air system constructed through a second heat exchanger, a fan, and indoor air delivery terminals enables faster response to indoor heating and cooling loads, allowing it to handle loads in high humidity environments. Radiation also enhances indoor thermal inertia. This solves the pain points of existing radiant + fresh air systems, such as slow heating and cooling response, high requirements for building airtightness, and high humidity control requirements (they cannot be turned on in high humidity).

[0058] In addition, the technical solution provided in this application offers a variety of terminal capacity options to meet the needs of rooms with different loads.

[0059] Furthermore, the indoor air handling system provided in this application embodiment can be installed and adapted to single-level scenarios by separately setting and cleverly arranging the host processing module and air supply module of the indoor air handling unit.

[0060] Specific embodiments of the invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the invention can be employed. It should be understood that the embodiments of the invention are not therefore limited in scope. Within the spirit and scope of the appended claims, embodiments of the invention include many changes, modifications, and equivalents. Features described and / or shown for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. Attached Figure Description

[0061] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, guided by the teachings of this invention, can select various possible shapes and proportions to implement the invention according to specific circumstances.

[0062] Figure 1 This is a schematic diagram of the structure of an indoor air handling system provided in the embodiments of this application;

[0063] Figure 2 This is a schematic diagram of the layout of an indoor air handling system provided in the embodiments of this application, applied in a first type of housing system.

[0064] Figure 3 This is a schematic diagram showing the layout of an indoor air handling system provided in the embodiments of this application, applied in a second type of housing system.

[0065] Figure 4 This is a schematic diagram of the layout of an indoor air handling system provided in the embodiments of this application, applied in a third type of housing system.

[0066] Figure 5 This is a schematic diagram illustrating the installation of an indoor air handling system provided in this application on a flat balcony.

[0067] Figure 6 This is an isometric view of the main unit processing module in an indoor air handling system provided in the embodiments of this application;

[0068] Figure 7 This is an exploded view of the host processing module in an indoor air handling system provided in the embodiments of this application;

[0069] Figure 8 This is a schematic diagram of the internal structure layout of the host processing module in an indoor air handling system provided in the embodiments of this application;

[0070] Figure 9 This is a schematic diagram of the internal structure of the host processing module hidden in the electrical control box in an indoor air handling system provided in this application embodiment;

[0071] Figure 10 This is a schematic diagram of the structure of an air supply module in an indoor air handling system provided in the embodiments of this application;

[0072] Figure 11 This is a flowchart illustrating the steps of a control method for an indoor air handling system provided in the embodiments of this application;

[0073] Figure 12 This is a schematic diagram illustrating the scenario in which the control method for an indoor air treatment system provided in this application is applied.

[0074] Reference numerals in the figures of this application:

[0075] 100. Outdoor unit;

[0076] 1. Compressor;

[0077] 11. Refrigerant inlet;

[0078] 12. Refrigerant outlet;

[0079] 200. Indoor air handling unit;

[0080] 21. First heat exchanger; 211. First refrigerant flow channel;

[0081] 212. Water flow channel;

[0082] 213. Water pump;

[0083] 22. Second heat exchanger;

[0084] 221. Second refrigerant flow channel;

[0085] 222. Airflow channel;

[0086] 23. Fan;

[0087] 24. Refrigerant flow distribution components;

[0088] 31. Indoor air delivery terminal;

[0089] 310. Air valve;

[0090] 32. Indoor radiant terminals;

[0091] 321. Ground-based radiation terminus;

[0092] 322. Top surface radiating end;

[0093] 33. Forced convection heat exchange terminal;

[0094] 34. Air quality detection device;

[0095] 4. Host processing module;

[0096] 40. First shell;

[0097] 401. Anterior sidewall;

[0098] 402. Rear sidewall;

[0099] 403. Top wall;

[0100] 404. Bottom wall;

[0101] 405. Left side wall;

[0102] 406. Right side wall;

[0103] 411. New Opportunities;

[0104] 412. Return air vent;

[0105] 413. Exhaust vent;

[0106] 41. Fresh air fan;

[0107] 43. Air purification unit;

[0108] 45. Heating unit;

[0109] 46. ​​Electrical control box;

[0110] 5. Air supply module;

[0111] 50. Second shell;

[0112] 501. Air Inlet;

[0113] 502. Air vent;

[0114] 51. Air supply fan;

[0115] 511. First volute;

[0116] 512. Second volute;

[0117] 513. Enclosure panels;

[0118] 514. Cavity;

[0119] 515. Air outlet;

[0120] 516. Partition;

[0121] 600. Balcony;

[0122] 6. Suspended ceiling;

[0123] 61. First refrigerant connection pipe;

[0124] 62. Second refrigerant connection pipe;

[0125] 610. First set of openings;

[0126] 620. Second set of openings;

[0127] 63. Clean water flows into the pipeline;

[0128] 64. Solenoid valve;

[0129] 65. Wet film humidifier;

[0130] 66. First water receiving tray;

[0131] 67. Second water receiving tray;

[0132] F, Active Zone;

[0133] E. Quiet zone;

[0134] H1, distance from the ground;

[0135] W1, distance from the wall;

[0136] X, horizontal direction;

[0137] Y, the height direction;

[0138] Z. Depth. Detailed Implementation

[0139] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art fall within the scope defined by the appended claims.

[0140] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0141] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0142] This invention provides an indoor air treatment system and its control method, which overcomes the drawbacks of existing all-air systems and radiation + fresh air systems by having air and radiation share the load, thereby improving the user experience.

[0143] Please refer to the following for comprehensive information. Figures 1 to 5 This application specification provides an indoor air handling system, which may include: an outdoor unit 100, an indoor air handling unit 200, an indoor air delivery terminal 31, and an indoor radiant terminal 32. The indoor air handling unit 200 includes a first heat exchanger 21 and a second heat exchanger 22. The first heat exchanger 21 includes a first refrigerant channel 211, and the second heat exchanger 22 includes a second refrigerant channel 221. The first refrigerant channel 211 and the second refrigerant channel 221 can be connected to the refrigerant inlet 11 and the refrigerant outlet 12 of the outdoor unit 100. The refrigerant output from the refrigerant outlet 12 can be selectively distributed to the first refrigerant channel 211 and / or the second refrigerant channel 221. The first heat exchanger 21 further includes a second refrigerant flow channel 221; the first heat exchanger 21 also includes a water flow channel 212, in which water can exchange heat with the refrigerant in the first refrigerant flow channel 211, and the water flow channel 212 can be connected to the inlet and outlet of the indoor radiant terminal 32; the second heat exchanger 22 also includes an air flow channel 222, in which air flowing through the air flow channel 222 can exchange heat with the refrigerant in the second refrigerant flow channel 221; the indoor air handling unit 200 includes an air inlet, an air outlet 502 and a fan 23, in which air flowing in from the air inlet can flow through the air flow channel 222 under the drive of the fan 23 and then flow out from the air outlet 502 to the indoor air delivery terminal 31.

[0144] The indoor air handling system provided in this application embodiment may mainly include: an outdoor unit 100, an indoor air handling host 200, an indoor air delivery terminal 31, and an indoor radiant terminal 32, etc.

[0145] The outdoor unit 100 may include a compressor 1, a heat exchange unit, a throttling unit, and a reversing valve. The outdoor unit 100 has a refrigerant inlet 11 and a refrigerant outlet 12, which can be connected to the indoor air handling unit 200 via refrigerant connection pipes, and cooperate with the indoor air delivery terminal 31 and the indoor radiant terminal 32 to achieve the function of regulating indoor temperature, humidity, and cleanliness.

[0146] The indoor air handling unit 200 may mainly include: a first heat exchanger 21 and a second heat exchanger 22. The first heat exchanger 21 may include a first refrigerant channel 211 and a water channel 212. The water channel 212 can be connected to an indoor radiant terminal 32. The indoor radiant terminal 32 may include a floor radiant terminal 321 and / or a ceiling radiant terminal 322.

[0147] The water in the water channel 212 can exchange heat with the refrigerant in the first refrigerant channel 211. The cooled water / heated water after heat exchange with the refrigerant in the first refrigerant channel 211 can be supplied to the indoor radiant terminal 32. The indoor radiant terminal 32 is used to release cold or heat into the room to regulate the indoor temperature and / or humidity.

[0148] The second heat exchanger 22 may include a second refrigerant flow channel 221 and an air flow channel 222. The air flow channel 222 may also be connected to an indoor air delivery terminal 31. The indoor air delivery terminal 31 may include a duct. The air in the air flow channel 222 can exchange heat with the refrigerant in the second refrigerant flow channel 221. The cooled / heated air after heat exchange with the refrigerant in the second refrigerant flow channel 221 can be supplied to the indoor air delivery terminal 31. Specifically, the indoor air handling unit 200 may further include an air inlet, an air outlet 502, and a fan 23. Air flowing in from the air inlet can flow through the air flow channel 222 under the drive of the fan 23 and then flow out from the air outlet 502 to the indoor air delivery terminal 31. The indoor air delivery terminal 31 is used to blow cool or hot air into the room to regulate indoor temperature and / or humidity and / or air cleanliness.

[0149] Cleanliness mainly includes: dust particle related indicators (such as PM2.5), chemical pollutant indicators (such as formaldehyde concentration, total volatile organic compound (TVOC) concentration, etc.), microbial related indicators (such as total bacterial count, etc.), carbon dioxide concentration, etc.

[0150] In this embodiment, by using an outdoor unit 100 (which can be the same outdoor unit 100) to supply refrigerant with cooling or heating capacity to the first heat exchanger 21 and the second heat exchanger 22 of the indoor air handling unit 200, the indoor radiant terminal 32 connected to the first heat exchanger 21 can release cooling or heating capacity into the room to regulate the indoor temperature, and the indoor air delivery terminal 31 connected to the second heat exchanger 22 can blow cool or hot air into the room to regulate the indoor temperature and / or humidity and / or air cleanliness. In the process of indoor air handling, the radiant energy of the indoor radiant terminal 32 and the air blown by the indoor air delivery terminal 31 share the load, which has the following advantages:

[0151] Compared to existing single all-air systems, the technical solution provided in this application reduces the overall air volume, makes the ducts thinner, and facilitates passage through beams. This solves the pain points of existing single all-air systems where the cooling and heating loads and heat exchange cycles are all borne by the air, resulting in large air volume, thick ducts, and difficulties in drilling through walls for installation.

[0152] Compared to existing radiant + fresh air systems (where only radiation handles the heating and cooling loads), the technical solution provided in this application enhances natural indoor convection, reduces the vertical temperature difference between radiant heating and cooling, and results in a more uniform temperature distribution. Furthermore, the air system constructed through the second heat exchanger 22, fan 23, and indoor air delivery terminal 31 accelerates the response speed to indoor heating and cooling loads, enabling it to handle loads in high humidity environments. Radiation also enhances indoor thermal inertia. This solves the pain points of existing radiant + fresh air systems, such as slow heating and cooling response, high requirements for building airtightness, and high humidity control requirements (they cannot be turned on in high humidity). Especially for single-level residential scenarios, this application overcomes the drawback of existing all-air systems where large-diameter ducts occupy significant height, preventing the application of all-air systems in single-level residential scenarios with limited ceiling height.

[0153] In addition, the technical solution provided in this application offers a variety of terminal capacity options to meet the needs of rooms with different loads.

[0154] In this embodiment, the first refrigerant flow path of the first heat exchanger 21 and the second refrigerant flow path of the second heat exchanger 22 can be arranged in parallel. The refrigerant output from the refrigerant outlet 12 can be selectively distributed to at least one of the first refrigerant flow path 211 and the second refrigerant flow path 221. Specifically, the indoor air handling unit 200 may include a refrigerant flow distribution component 24, which is used to distribute the refrigerant output from the refrigerant outlet 12 between the first refrigerant flow path 211 and the second refrigerant flow path 221, thereby meeting the air handling needs of different scenarios. In addition, since different heat exchange terminals have different performance requirements, by setting the refrigerant flow distribution component 24, the compatibility of the indoor air handling system with heat exchange terminals can also be improved, enabling it to adapt to various types of heat exchange terminals.

[0155] Specifically, the refrigerant flow distribution component 24 can be a flow regulating device disposed on the first refrigerant flow channel 211 and / or the second refrigerant flow channel 221. For example, a first flow regulating device can be disposed on the first refrigerant flow channel 211, and a second flow regulating device can be disposed on the second refrigerant flow channel 221. Specifically, the first and second flow regulating devices can be in the form of electronic expansion valves. Of course, the specific arrangement of the first and second flow regulating devices can also be in other forms, and is not limited to the above description. Those skilled in the art may make other modifications under the guidance of the technical essence of this application, but as long as the functions and effects achieved are the same as or similar to those of this application, they should all be covered within the scope of protection of this application.

[0156] Taking a specific application scenario as an example, in a cooling scenario, when the indoor temperature has reached or is close to the set temperature requirement, but the humidity has not yet reached the set humidity requirement, the refrigerant flow rate in the first refrigerant channel 211 can be reduced by adjusting the first flow regulating device, and the refrigerant flow rate in the second refrigerant channel 221 can be reduced by adjusting the second flow regulating device. Specifically, the refrigerant flow rate in the second refrigerant channel 221 flowing into the air can be controlled to be greater than the refrigerant flow rate in the first refrigerant channel 211 flowing into the water. The refrigerant in the second refrigerant channel 221 is used to exchange heat with the air to be flowed into the room, and the air volume and / or temperature of the air outlet 502 are controlled in combination, so that the indoor temperature is taken into account while meeting the set humidity requirement.

[0157] Alternatively, in another specific application scenario, such as a heating scenario, if the current indoor temperature has not reached the set temperature requirement, the user does not have a high demand for rapid heating, but does not want a large amount of hot air to be blown out, the first flow regulating device can be adjusted to increase the refrigerant flow in the first refrigerant channel 211, and the second flow regulating device can be adjusted to decrease the refrigerant flow in the second refrigerant channel 221, thereby reducing the amount of hot air delivered by the indoor air delivery terminal 31 or stopping the delivery of hot air by the indoor air delivery terminal 31.

[0158] Please see Figure 1 and Figure 2In one embodiment, the indoor air handling system may further include an air quality detection device 34 for detecting the temperature and / or humidity and / or cleanliness of the indoor air. The outdoor unit 100 may contain only one compressor 1. The refrigerant flow distribution component 24 may distribute the refrigerant output from the refrigerant outlet 12 of the compressor 1 between the first refrigerant flow channel 211 and the second refrigerant flow channel 221 based on the detected temperature and / or humidity and / or cleanliness of the indoor air. By setting only one high-power compressor capable of handling both wet and hot / cold loads, compared to setting two low-power compressors respectively for handling wet and hot / cold loads, air handling efficiency can be improved in some scenarios. For example, when only dehumidifying is required, a high-power compressor can be fully engaged in dehumidification, which can improve dehumidification efficiency. When only handling hot / cold loads, a high-power compressor can be fully engaged in hot / cold loads, which can improve the efficiency of hot / cold loads.

[0159] In this embodiment, the indoor air handling system may be equipped with an air quality detection device 34, which is used to detect at least one of the indoor air temperature, humidity, and cleanliness. Specifically, the air quality detection device 34 may be an integrated detection device capable of simultaneously detecting temperature, humidity, and cleanliness. Alternatively, the air quality detection device 34 may detect only one or two parameters. The specific form of the air quality detection device 34 is not specifically limited herein.

[0160] In this embodiment, the indoor air handling system may be equipped with a controller, and the air quality detection device 34 and the refrigerant flow distribution component 24 can both be electrically connected to the controller. The air quality detection device 34 can send detection signals to the controller, and the controller can control the flow adjustment of the refrigerant flow distribution component 24 according to the detection signals acquired by the air quality detection device 34. The refrigerant flow distribution component 24 may integrate a controller; alternatively, the controller that performs the refrigerant flow distribution function may be integrated into the control device of the indoor air handling system. The control device may take the form of a control board, but it can also take other forms, and this application does not impose a single limitation.

[0161] It should be noted that the indoor air handling system provided in this application embodiment utilizes a refrigerant flow distribution component 24 to distribute refrigerant output from the refrigerant outlet 12 of the same compressor 1 between the first refrigerant flow channel 211 and the second refrigerant flow channel 221 based on the detected indoor air temperature and / or humidity and / or cleanliness, thereby achieving the regulation of air temperature, humidity, and cleanliness. Compared to the prior art, which typically uses two compressors 1, one for regulating heating and cooling loads and the other for regulating humidity, this application uses only one compressor 1 and achieves the following effects: while ensuring that all functions are realized, it simplifies the core device of the indoor air handling system, effectively controls costs, reduces the overall size, and reduces the space required for installation, which is conducive to the promotion and application of the indoor air handling system in single-level residential settings.

[0162] like Figure 2 As shown, in one embodiment, the indoor air handling system may further include a forced convection heat exchange terminal 33, and the water channel 212 may also be connected to the inlet and outlet of the forced convection heat exchange terminal 33.

[0163] In this embodiment, the indoor air handling system may further include a forced convection heat exchange terminal 33. This forced convection heat exchange terminal 33 can accelerate heat transfer through forced convection, allowing the indoor temperature to quickly reach the required temperature. Specifically, the forced convection heat exchange terminal 33 may include a fan coil unit and / or a cooling beam. Of course, the specific form of the forced convection heat exchange terminal 33 is not limited to the examples above; other forms are also possible. Those skilled in the art, guided by the technical essence of this application, may make other modifications, but as long as the functions and effects achieved are the same as or similar to those of this application, they should all be covered within the scope of protection of this application.

[0164] In this embodiment, the forced convection heat exchange terminal 33 has an inlet and an outlet, and the water flow channel 212 of the first heat exchanger 21 can be connected to the forced heat exchange terminal. For example, the water flow channel 212 of the first heat exchanger 21 can be connected to an outlet pipe and a return pipe. The outlet pipe can be connected to the inlet of the forced heat exchange terminal, and the outlet of the forced heat exchange terminal can be connected to the return pipe.

[0165] Taking the forced convection heat exchange terminal 33 as an example, when in use, the indoor air is cooled (heated) after passing through the cold water (hot water) coil to maintain a constant room temperature. It mainly relies on the forced action of the fan of the fan coil unit to cool or heat the air as it passes through the surface of the heater, thereby enhancing the convective heat exchange between the radiator and the air and enabling rapid heating or cooling of the room air.

[0166] In the embodiments of this application, different combinations of the heat exchange terminals can form different HVAC systems, corresponding to different application scenarios, thereby meeting the application needs of different scenarios. Examples from different application scenarios will be given below.

[0167] like Figure 2 As shown, in the first embodiment, the forced convection heat exchange terminal 33 includes a fan coil unit, the indoor radiant terminal 32 includes a ground radiant terminal 321, and the indoor air delivery terminal 31 includes an air duct; the fan coil unit is located in the active zone F and / or the quiet zone E of the room, the ground radiant terminal 321 is located in the active zone F and the quiet zone E of the room; and the air duct is located in the active zone F and the quiet zone E of the room.

[0168] In this embodiment, the combination of heat exchange terminals includes: a forced convection heat exchange terminal 33, an indoor radiant terminal 32, and an indoor air delivery terminal 31. The forced convection heat exchange terminal 33 is illustrated using a fan coil unit as an example. The indoor radiant terminal 32 may include a floor radiant terminal 321, and the indoor air delivery terminal 31 is illustrated using an air duct as an example.

[0169] For indoor spaces, the area is divided into a relatively active zone (F) and a quiet zone (E). Quiet zone E is specifically for areas where users are more sensitive to noise, and may include areas such as bedrooms and studies. Active zone F is specifically for areas where users have a higher need for rapid temperature response and a relatively higher tolerance for noise compared to quiet zone E, and may include areas such as living rooms and dining rooms.

[0170] By installing ground-based radiant terminals 321, along with ductwork above the interior and fan coil units in the active zone F, the user's desire for dynamic and static zone control can be met, while also satisfying the need for overhead piping. Specifically, the air supply section (hereinafter referred to as the air side), consisting of the second heat exchanger 22, fan 23, and indoor air delivery terminal 31, utilizes the air outlet through the ductwork to handle heating / cooling loads, humidity, and cleanliness regulation. For the water supply system (hereinafter referred to as the water side), consisting of the first heat exchanger 21 and its heat exchange terminals, the ground-based radiant terminals 321 provide (cold / hot) radiation, and the fan coil units in the active zone F enable rapid temperature control response.

[0171] Furthermore, in some scenarios, such as when users don't have a particularly high need for quiet operation, or when users want a sense of airflow and rapid temperature adjustment during cooling, a floor radiant terminal 321 can be installed on the floor, with ductwork installed in the upper space, and fan coil units installed in both the active zone F and the quiet zone E. Of course, in other scenarios, depending on user needs and installation environment, a fan coil unit can be installed only in the quiet zone E.

[0172] like Figure 3 As shown, in the second embodiment, the indoor radiant terminal 32 includes a top radiant terminal 322 and a ground radiant terminal 321, and the indoor air delivery terminal 31 includes a duct; the top radiant terminal 322 includes a capillary tube; the top radiant terminal 322, the ground radiant terminal 321 and the duct are all located in the active zone F and the quiet zone E of the room.

[0173] In this embodiment, for locations with extremely high noise requirements, the forced convection heat exchange terminal 33 may not be necessary. Specifically, the heat exchange terminal may include: a ceiling radiant terminal 322, a floor radiant terminal 321, and an indoor air delivery terminal 31. The indoor air delivery terminal 31 includes a duct, and the ceiling radiant terminal 322 may include a capillary tube. The ceiling radiant terminal 322, the floor radiant terminal 321, and the indoor air delivery terminal 31 can be respectively located in the dynamic zone F and the static zone E of the room. Since the heat exchange terminals have no moving parts, they do not generate significant noise during operation, thus better meeting the requirements of locations with extremely high noise requirements and satisfying the user's need for quiet operation.

[0174] On the air side, the ductwork can handle heating and cooling loads, humidity, and air cleanliness regulation. On the water side, both the ceiling and floor can provide (cold / hot) radiation, achieving three-dimensional heating and ensuring a superior user comfort experience.

[0175] like Figure 4 As shown, in the third embodiment, the indoor radiant terminal 32 includes a top surface radiant terminal 322, and the indoor air delivery terminal 31 includes a duct; the top surface radiant terminal 322 includes a capillary tube; the top surface radiant terminal 322 and the duct are both located in the active zone F and the quiet zone E of the room.

[0176] In this embodiment, the main difference from the second embodiment described above is that the form of the ground radiation terminal 321 is omitted from the heat exchange terminal.

[0177] Specifically, the heat exchange terminals may include a ceiling radiant terminal 322 and an indoor air delivery terminal 31. The indoor air delivery terminal 31 includes a duct, and the ceiling radiant terminal 322 may include a capillary tube. The ceiling radiant terminal 322 and the indoor air delivery terminal 31 can be respectively located in the moving zone F and the static zone E of the room. Since the heat exchange terminals have no moving parts, they do not generate significant noise during operation, thus effectively meeting the needs of environments with very high noise requirements and satisfying users' quiet operation requirements.

[0178] On the wind side, the air outlets from the ducts can handle the functions of regulating heating and cooling loads, humidity, and cleanliness. On the water side, the roof surface can provide (cold / hot) radiation. Because the above implementation does not require the installation of ground-level radiant terminals 321, it is suitable for partial renovations and renovations of existing buildings.

[0179] Please refer to the following: Figure 1 , Figure 2 and Figure 6 In one embodiment, the air inlet includes a fresh air inlet 411 and a return air inlet 412. The fresh air inlet 411 is used to connect to the outside to introduce outdoor air, and the return air inlet 412 is used to connect to the inside to introduce indoor air into the indoor air handling unit 200. The fresh air inlet 411 and the return air inlet 412 can be opened simultaneously to mix the outdoor air and the indoor air in the indoor air handling unit 200.

[0180] In this embodiment, the air inlet may include a fresh air inlet 411 connected to the outside and a return air inlet 412 connected to the inside. The indoor air handling unit 200 may include a first housing 40. When the fan 23 is started, a negative pressure can be formed inside the first housing 40 of the indoor air handling unit 200, drawing outdoor air into the first housing 40 through the fresh air inlet 411 and indoor air into the first housing 40 through the return air inlet 412. The two are mixed inside the first housing 40, and the mixed gas then exchanges heat with the second heat exchanger 22 before flowing out from the air outlet 502 and into the room through the indoor air delivery terminal 31.

[0181] Generally, there is a certain difference in temperature and humidity between outdoor fresh air and indoor air. When outdoor fresh air is directly introduced into the room, it will affect the indoor temperature and humidity, causing it to deviate from the preset target temperature and humidity. However, in this embodiment, the return air introduced into the room through the return air vent 412, compared to the case of introducing fresh air entirely from the outside, can effectively utilize the cooling or heating capacity of the indoor return air by introducing return air with the same temperature and humidity as the indoor air, thus reducing the fluctuation of indoor temperature and humidity caused by the total introduced air. This reduces the load on the indoor air handling unit 200 required for temperature and humidity regulation, saving energy.

[0182] Furthermore, the fresh air inlet 411 and / or the return air inlet 412 are provided with a flow regulating device, which is used to regulate the mixing ratio of the outdoor air and the indoor air.

[0183] In this embodiment, at least one of the fresh air inlet 411 and the return air inlet 412 may be provided with a flow regulating device. The flow regulating device may be a flow valve with adjustable opening. By adjusting the flow regulating device, the mixing ratio of outdoor air and indoor air can be controlled, that is, the ratio between fresh air introduced from the outside and return air introduced from the inside in the total introduced air can be controlled.

[0184] Specifically, the flow regulating device can be electrically connected to a controller, which is also electrically connected to an air quality detection device 34. The controller can adjust the opening degree of the flow regulating device based on the indoor air temperature and / or humidity and / or cleanliness detected by the air quality detection device 34. In addition, the controller can also receive outdoor air quality (including temperature and / or humidity and / or cleanliness) signals, and can determine the current opening degree of the flow regulating device based on a comprehensive assessment of both outdoor and indoor air quality.

[0185] For example, when the outdoor temperature and humidity are close to the indoor temperature and humidity, and the outdoor air cleanliness is higher than the indoor air cleanliness, the proportion of outdoor air flowing into the fresh air inlet 411 can be increased, or even all the air can be introduced through the fresh air inlet 411. When there is a large difference between the outdoor temperature and humidity and the indoor temperature and humidity, and the outdoor air cleanliness is relatively poor, the proportion of outdoor air flowing into the fresh air inlet 411 can be appropriately reduced.

[0186] In one embodiment, the fan 23 includes a fresh air fan 41 and a supply air fan 51, which can be turned on simultaneously. The fresh air fan 41 is used to introduce outdoor air into the indoor air handling unit 200, and the supply air fan 51 is used to deliver the mixed outdoor air and indoor air into the indoor air delivery terminal 31.

[0187] In this embodiment, the fan 23 may include a fresh air fan 41 for introducing outdoor air into the indoor air handling unit 200, and a supply fan 51 for sending the mixed heat-exchange treated outdoor air and indoor air into the indoor air delivery terminal 31.

[0188] When in use, the fresh air fan 41 and the supply air fan 51 can be turned on at the same time. The two work together to draw outdoor air and / or indoor return air into the first housing 40 of the indoor air handling unit 200 for mixing. The mixed gas then exchanges heat with the second heat exchanger 22 and flows out from the air outlet 502 and into the room through the indoor air delivery terminal 31.

[0189] Please see Figure 2 , Figure 3 or Figure 4In one embodiment, the indoor air handling system further includes a damper 310 capable of regulating gas flow. The indoor air delivery terminal 31 includes a duct, and the damper 310 is disposed on the duct. The damper 310 can control the gas flow to the room based on the detected temperature and / or humidity and / or cleanliness of the indoor air.

[0190] In this embodiment, the indoor air handling system may further include a damper 310 capable of adjusting the gas flow rate output from the indoor air delivery terminal 31 to the room. Taking the indoor air delivery terminal 31 as an example, which includes a duct, the damper 310 may be installed on the duct. The damper 310 itself may be equipped with a control unit, or the damper 310 may be electrically connected to a controller. The control unit or controller may be electrically connected to an air quality detection device 34. In specific use, the temperature and / or humidity and / or cleanliness signals of the indoor air detected by the air quality detection device 34 may be sent to the control unit or controller. The control unit or controller may adjust the opening of the damper 310 according to the temperature and / or humidity and / or cleanliness of the indoor air, thereby controlling the gas flow rate to the room.

[0191] Specifically, there are multiple air ducts that lead to multiple indoor areas, and correspondingly, there are multiple air valves 310; there are multiple air quality detection devices 34 that are installed in the multiple indoor areas; the air valves 310 control the gas flow rate to the area where the air quality detection device 34 is located based on the temperature and / or humidity and / or cleanliness of the indoor air in the area where the air quality detection device 34 is located.

[0192] In this embodiment, the air duct may include multiple ducts, each leading to a relatively independent area within the room, such as a bedroom, study, living / dining room, etc. Each independent air duct may be equipped with a damper 310 that can independently control the opening degree of the air duct. Thus, by controlling the opening degree of the damper 310, the temperature and / or humidity and / or cleanliness of the indoor air in each area can be independently controlled.

[0193] In practical use, based on the temperature and / or humidity and / or cleanliness of the indoor air in the area where the air quality detection device 34 is located, the air flow rate to the area where the air quality detection device 34 is located can be controlled by adjusting the opening of the air valve 310, thereby adjusting the temperature and / or humidity and / or cleanliness of the indoor air in the current area to meet the user's set requirements.

[0194] Currently, all indoor units of existing all-air systems are floor-standing designs. Floor-standing units are not only large in size but also require a lot of floor space for installation, making them mainly suitable for villas or scenarios with separate equipment rooms. They are difficult to install and adapt in single-level apartments.

[0195] Existing dehumidifying air purifiers are typically wall-mounted or ceiling-mounted. For wall-mounted installations, the installation length must be at least 1.5 meters; for ceiling-mounted installations, the installation thickness must exceed 350 mm, and the depth (Z) must exceed 650 mm. For typical flat ceilings, the ceiling height is usually less than 350 mm, making it difficult to install the dehumidifying air purifier completely above the ceiling. For standard kitchen cabinets, the depth (Z) does not exceed 600 mm, and even in extreme cases, it generally does not exceed 650 mm. Therefore, it is also difficult to directly install the dehumidifying air purifier in existing cabinets. Consequently, current dehumidifying air purifiers are difficult to widely apply in flat-style apartments. Furthermore, taking the installation of this dehumidifying fresh air unit on a balcony 600 as an example, the installation length requirement for this dehumidifying fresh air unit is more than 1.5 meters, while the depth of existing balconies 600 (especially service balconies 600 used for placing washing machines and drying clothes) is mostly within 1.5 meters, and some even have a depth of less than 1.2 meters. Therefore, it is difficult to install the dehumidifying fresh air unit on a balcony 600 in terms of installation thickness, depth, or installation length.

[0196] Overall, how to integrate indoor air treatment systems, specifically feng shui systems that combine air and radiation, into the installation and application of indoor air treatment systems in single-level residential settings is a direction that urgently needs improvement.

[0197] Please refer to the following: Figures 5 to 10 In one embodiment, the indoor air handling unit 200 may include a separate main unit processing module 4 and an air supply module 5. The main unit processing module 4 has a first housing 40, in which a first heat exchanger 21 and a second heat exchanger 22 are disposed, and an air inlet is disposed on the first housing 40. The air supply module 5 has a second housing 50, in which a fan of the air supply module 5 may be disposed, and an air outlet 502 is disposed on the second housing 50. The first housing 40 is also provided with an exhaust port 413, and the second housing 50 is also provided with an air inlet 501. The exhaust port 413 and the air inlet 501 are connected by a pipeline.

[0198] In this embodiment, the indoor air handling unit 200 may include a separate main unit processing module 4 and an air supply module 5. The main unit processing module 4 may include a first housing 40, and a first heat exchanger 21 and a second heat exchanger 22 disposed within the first housing 40. The air supply module 5 may include a second housing 50, and a fan disposed within the second housing 50. By separating the main unit processing module 4 and the air supply module 5, the original indoor air handling unit 200, which was originally a large unit, can be divided into two relatively smaller units. When the main unit processing module 4 and the air supply module 5 are installed separately, they can be flexibly installed using suitable installation space in a single-level apartment setting, thus facilitating the installation and application of the indoor air handling unit 200 in single-level apartment settings with limited installation space.

[0199] like Figure 5 As shown, specifically, the main processing module 4 is at least partially located in the lower part of the ceiling 6, and the air supply module 5 is entirely located in the upper part of the ceiling 6 or partially located in the upper part of the ceiling 6.

[0200] In this embodiment, for an application scenario where a suspended ceiling 6 is provided, the air supply module 5 can be at least partially located on the upper part of the suspended ceiling 6, and the main unit processing module 4 can be at least partially located on the lower part of the suspended ceiling 6.

[0201] As for the air supply module 5, since it is equipped with an air supply fan 51, the air supply fan 51 will generate a certain amount of noise when it is working. When the air supply module 5 is at least partially installed in the upper part of the ceiling 6, the air supply fan 51 can be moved away from the user and the noise generated by the air supply fan 51 when it is working can be isolated by the ceiling 6. This not only enables the indoor air handling unit 200 to be installed and applied in a single-level scenario, but also ensures that the indoor air handling unit 200 achieves a better quiet effect when it is working, ensuring that the user has a better user experience.

[0202] For single-level apartments, installation space is limited, and there is usually no separate equipment room, making the location for installing the indoor air handling unit 200 very restrictive. Furthermore, in single-level apartment scenarios, users expect efficient use of all interior space and do not want to install a large, independent machine. Therefore, one of the main installation locations for the indoor air handling unit 200 is the balcony 600. Therefore, in this embodiment, the indoor air handling unit 200 is primarily installed on the balcony 600 as an example. Of course, this embodiment does not preclude the possibility of installing the indoor air handling unit 200 in other scenarios.

[0203] When the indoor air handling unit 200 is installed on the balcony 600, the air supply module 5 can be installed above the ceiling 6 of the balcony 600, and the main unit processing module 4 can be wall-mounted on the side wall of the balcony 600. For aesthetic reasons, the main unit processing module 4 can be concealed in a cabinet on the balcony 600.

[0204] like Figure 6 and Figure 7 As shown, the host processing module 4 has a first housing 40, which is mainly used to install core functional components such as the first heat exchanger 21 and the second heat exchanger 22. The first housing 40 is provided with an air inlet and an air outlet 413.

[0205] Please refer to the following: Figure 9 The air supply module 5 has a second housing 50, which is mainly used to install the fan 23 (specifically, the air supply fan 51). The second housing 50 is provided with an air outlet 502 and an air inlet 501. The exhaust port 413 of the first housing 40 is connected to the air inlet 501 of the second housing 50 through a pipe. After the fan 23 is started, the air flowing into the first housing 40 can flow into the second housing 50 through its exhaust port 413 and the air inlet 501 of the second housing 50.

[0206] Please refer to the following: Figure 5 , Figure 7 , Figure 8 and Figure 9 In one embodiment, the host processing module 4 is installed against a wall and is arranged horizontally, with the first heat exchanger 21 and the second heat exchanger 22 arranged horizontally in the first housing 40.

[0207] In this embodiment, the host processing module 4 can be installed against a wall to save installation space as much as possible. In particular, it facilitates concealed installation of the host processing module 4. For example, the host processing module 4 can be installed in a pre-installed cabinet on the wall.

[0208] In this embodiment, the main unit processing module 4 is generally horizontally positioned. Specifically, the first housing 40 of the main unit processing module 4 can be a hollow box structure. The first housing 40 has a lateral dimension (i.e., length dimension) and a longitudinal dimension (i.e., height dimension), with the lateral dimension being larger than the longitudinal dimension. When the main unit processing module 4 is horizontally positioned, its lateral dimension extends along the horizontal direction X, and its longitudinal dimension extends along the vertical direction Y. This arrangement facilitates increasing the height of the main unit processing module 4 from the ground, making it less likely to interfere with the user's head. When the main unit processing module 4 has a higher height from the ground, correspondingly, devices such as washbasins and washing machines can be installed below the main unit processing module 4 for operation and use below the main unit processing module 4, thereby making effective use of the space below the main unit processing module 4.

[0209] In this embodiment, the first heat exchanger 21 can specifically be a plate heat exchanger, or it can be other types of heat exchangers. In this embodiment, the first heat exchanger 21 is mainly described as a plate heat exchanger. The first heat exchanger 21 can be plate-shaped with a certain thickness. Relative to the length and width of the first heat exchanger 21, the thickness of the first heat exchanger 21 is usually the minimum dimension.

[0210] The second heat exchanger 22 can be a finned heat exchanger or other types of heat exchangers. In this embodiment, a finned heat exchanger is used as an example. The second heat exchanger 22 can also be plate-shaped with a certain thickness. The thickness of the second heat exchanger 22 is usually the minimum dimension relative to its length and width.

[0211] The first heat exchanger 21 and the second heat exchanger 22 are arranged laterally in the first housing 40, specifically such that both the first heat exchanger 21 and the second heat exchanger 22 are along the lateral dimension of the main processing module 4 (i.e., Figure 5The horizontal arrangement of the first housing 40, compared to arranging the first heat exchanger 21 and the second heat exchanger 22 along the vertical Y direction, allows for effective control of the height dimension of the first housing 40, ensuring it remains within a defined height range and preventing interference with the user's head. Furthermore, this arrangement maximizes the utilization of the lateral dimension of the main unit processing module 4, enabling the installation and arrangement of core components within the first housing 40. Additionally, it effectively controls the lateral dimension of the main unit processing module 4, preventing it from becoming excessively large and improving its adaptability. Specifically, the lateral dimension of the main unit processing module 4 (i.e., the length of the first housing 40) can be controlled within 900 mm, allowing it to accommodate the depth dimensions of all balconies 600.

[0212] In one embodiment, the distance W1 of the front sidewall 401 of the first housing 40 from the wall is 500 mm to 600 mm; the distance H1 of the bottom wall 404 of the first housing 40 from the ground is 1.6 m to 1.8 m.

[0213] In this embodiment, the first housing 40 has opposing front sidewalls 401 and rear sidewalls 402, opposing top walls 403 and bottom walls 404, and opposing left sidewalls 405 and right sidewalls 406. When the main unit processing module 4 is installed against a wall, the distance W1 from the front sidewall 401 of the first housing 40 to the wall is 500 mm to 600 mm. This allows the main unit processing module 4 to be installed in a standard-sized cabinet (e.g., a wall cabinet) with a depth Z of typically 600 mm, achieving concealed installation while maintaining an aesthetically pleasing appearance. The wall cabinet is located below and close to the ceiling 6. The distance between the ceiling 6 and the top of the wall is 300 mm. After the main unit processing module 4 is installed on the balcony 600 of the flat floor, the distance H1 of the bottom wall 404 of the first housing 40 from the ground can be controlled between 1.6 meters and 1.8 meters. The above-mentioned distance H1 from the ground can leave space below the first housing 40 for the installation of sinks, washing machines, etc. At the same time, it can also facilitate users to operate below the first housing 40 without interfering with the first housing 40. In addition, the above-mentioned height distance also makes it convenient for users to open the wall cabinet to inspect or replace the filter of the main unit processing module 4.

[0214] It should be noted that the specific value of the ground distance H1 of the bottom wall 404 of the first housing 40 can be customized between 1.6 meters and 1.8 meters according to the user's needs. For example, for taller users, the ground distance H1 of the bottom wall 404 of the first housing 40 can be set higher; for shorter users, the ground distance H1 of the bottom wall 404 of the first housing 40 can be set lower.

[0215] In one embodiment, the first refrigerant channel 211 of the first heat exchanger 21 has a first refrigerant inlet and a first refrigerant outlet, the second refrigerant channel 221 of the second heat exchanger 22 has a second refrigerant inlet and a second refrigerant outlet, the water channel 212 has a water channel 212 inlet and a water channel 212 outlet, the air inlet includes a fresh air inlet 411 and a return air inlet 412, the fresh air inlet 411 and the exhaust outlet 413 are both located on the top wall 403 of the first housing 40, the first refrigerant channel 211, the second refrigerant channel 221 and the water channel 212 all pass through the top wall 403 of the first housing 40, or the first refrigerant channel 211, the second refrigerant channel 221 and the water channel 212 are all located inside the first housing 40 and the refrigerant channel of the outdoor unit 100 passes through the top wall 403 of the first housing 40, and the return air inlet 412 is located on the side wall or bottom wall 404 of the first housing 40.

[0216] In this embodiment, the first heat exchanger 21 includes a plate-shaped body. The first refrigerant flow channel 211 of the first heat exchanger 21 includes a first internal refrigerant flow channel disposed inside the plate-shaped body, a first refrigerant inlet and a first refrigerant outlet disposed on the plate-shaped body, and a first external refrigerant flow channel connected to the first internal refrigerant flow channel through the first refrigerant inlet and the second refrigerant outlet. The first refrigerant inlet can specifically be in the form of a refrigerant connector for connecting a refrigerant pipe, and the first refrigerant outlet can also specifically be in the form of a refrigerant connector for connecting a refrigerant pipe.

[0217] The second heat exchanger 22 may include a heat exchange body for flowing refrigerant, which is generally plate-shaped. The second refrigerant flow channel 221 of the second heat exchanger 22 includes: a second internal refrigerant flow channel disposed inside the heat exchange body, a second refrigerant inlet and a second refrigerant outlet disposed on the heat exchange body, and a second external refrigerant flow channel connected to the second internal refrigerant flow channel through the second refrigerant inlet and the second refrigerant outlet. The second refrigerant inlet may specifically be in the form of a refrigerant connector for connecting a refrigerant pipe, and the second refrigerant outlet may also specifically be in the form of a refrigerant connector for connecting a refrigerant pipe.

[0218] The first and second refrigerant inlets can be connected to the first junction (e.g., a tee connector) via a first external refrigerant pipeline, and then connected to the outdoor unit 100 via the outdoor unit 100's refrigerant pipeline (e.g., the first refrigerant connecting pipe 61 connected to the outdoor unit 100's refrigerant inlet 11, and the second refrigerant connecting pipe 62 connected to the outdoor unit 100's refrigerant outlet 12). Similarly, the second and second refrigerant outlets can be connected to the second junction (e.g., a tee connector) via a second external refrigerant pipeline, and then connected to the outdoor unit 100 via the outdoor unit 100's refrigerant pipeline (the first refrigerant connecting pipe 61 and the second refrigerant connecting pipe 62).

[0219] The top wall 403 of the first housing 40 may have a first set of openings 610 for the refrigerant piping of the outdoor unit 100 and a second set of openings 620 for the water channel 212. In this configuration, the first refrigerant channel 211, the second refrigerant channel 221, and the water channel 212 are all located inside the first housing 40, and the refrigerant channel of the outdoor unit 100 passes through the openings on the top wall 403 of the first housing 40. This arrangement reduces the number of openings and simplifies the connection and arrangement of external refrigerant piping located outside the first housing 40.

[0220] Alternatively, two sets of openings for passing through refrigerant channels can be provided on the top wall 403 of the first housing 40, each set of openings including two openings. One set of openings is used for passing through the first refrigerant channel 211, and the other set of openings is used for passing through the second refrigerant channel 221. When the first refrigerant channel 211 and the second refrigerant channel 221 pass through the top wall 403 of the first housing 40 and then connect to the refrigerant channel of the outdoor unit 100, it is convenient to connect and maintain the refrigerant pipeline outside the first housing 40.

[0221] In this embodiment, since the upper part of the top wall 403 of the first housing 40 also has the height space of the ceiling 6, when the fresh air inlet 411 and the exhaust air outlet 413 are both located on the top wall 403 of the first housing 40, and the first refrigerant channel 211, the second refrigerant channel 221, and the water channel 212 all pass through the top wall 403 of the first housing 40, or when the first refrigerant channel 211, the second refrigerant channel 221, and the water channel 212 are all located inside the first housing 40 and the refrigerant channel of the outdoor unit 100 passes through the top wall 403 of the first housing 40, the ceiling 6 space can be used for pipe connection, realizing the arrangement of refrigerant pipes, water pipes, and air ducts in the ceiling 6 space. In addition, using the ceiling 6 space for pipe connection is also beneficial for protecting the pipes and ensuring the aesthetics of the installation.

[0222] Considering the extremely limited installation space in a single-level environment, especially with the lateral dimensions and ground clearance already largely utilized, leaving little usable space, if the openings requiring external piping were located on the left / right side walls of the first housing 40, the lateral dimensions might be too large, preventing the first housing 40 from being properly arranged in a single-level environment. If the openings were located on the front / rear side walls of the first housing 40, the front-to-back dimensions of the first housing 40 would increase, creating a feeling of oppression and requiring greater cabinet depth, especially in scenarios with cabinets. If the openings were located on the bottom wall 404 of the first housing 40, the ground clearance of the main unit processing module 4 would be reduced, potentially interfering with the user's head and affecting the normal operation of equipment below the main unit processing module 4. Therefore, the piping arrangement in this embodiment maximizes the optimization of the space arrangement of the first housing 40 below the ceiling 6, maximizing the installation adaptability of the first housing 40.

[0223] The specific settings for each of the above parts will be described below.

[0224] In this embodiment, the water channel 212 has a water channel 212 inlet and a water channel 212 outlet. A first water passage can be provided between the water channel 212 inlet and the plate-shaped body, and a water pump 213 can be installed on this first water passage to provide driving force for water circulation. Specifically, the water channel 212 inlet can be in the form of a water pipe connector for connecting a return water pipe.

[0225] A second water passage can be provided between the outlet of the water channel 212 and the plate-shaped body. This second water passage can be equipped with a flow switch to control the flow of water. Specifically, the outlet of the water channel 212 can be in the form of a water pipe connector for connecting a water outlet pipe.

[0226] In this embodiment, the exhaust port 413 of the first housing 40 is located on the top wall 403 of the first housing 40. When the exhaust port 413 is located on the top wall 403 of the first housing 40, the exhaust port 413 can be efficiently and conveniently connected to the air supply module 5 located above the ceiling 6 through the shortest connection channel.

[0227] Specifically, the exhaust port 413 can be rectangular or quasi-rectangular, with its length direction perpendicular to the transverse direction (i.e., the length direction) of the first housing 40. The exhaust port 413 can be symmetrically arranged about the depth Z direction (i.e., the thickness direction) of the first housing 40, which helps to ensure the uniformity of the air outlet 413 of the first housing 40.

[0228] The air flowing in from the air inlet needs to be regulated in temperature and / or humidity and / or cleanliness by flowing laterally through the components inside the first housing 40 before being discharged from the air outlet 413. Devices for regulating the temperature and / or humidity and / or cleanliness of the air can be arranged sequentially along the lateral side of the first housing 40. The air outlet 413 and the air inlet can be located on opposite sides. The air outlet 413 can be located on the top wall 403 near the first side wall of the first housing 40. Figure 6 or Figure 7 The right sidewall 406 shown in the diagram, the air inlet can be close to the second sidewall of the first housing 40 ( Figure 6 or Figure 7 The left side wall 405 shown in the diagram allows air entering from the air inlet to flow sufficiently through the temperature and / or humidity and / or cleanliness processing components within the first housing 40.

[0229] The air inlet may include a fresh air inlet 411 connected to the outside and a return air inlet 412 connected to the inside. When the fan 23 is started, a negative pressure can be formed inside the first housing 40 of the indoor air handling unit 200, which introduces outdoor air into the first housing 40 through the fresh air inlet 411 and indoor air into the first housing 40 through the return air inlet 412, and the two mix inside the first housing 40.

[0230] Generally, there is a certain difference in temperature and humidity between outdoor fresh air and indoor air. When outdoor fresh air is directly introduced into the room, it will affect the indoor temperature and humidity, either decreasing or increasing them, causing them to deviate from the preset target temperature and humidity. However, in this embodiment, the return air introduced into the room through the return air vent 412, compared to the case of introducing fresh air entirely from the outside, effectively reduces the amount of fresh air introduced from the outside by introducing return air with the same temperature and humidity as the indoor air, thus reducing the fluctuations in indoor temperature and humidity caused by the total introduced air. This reduces the load on the indoor air handling unit 200 required for temperature and humidity regulation, saving energy.

[0231] The fresh air inlet 411 can be located on the top wall 403 of the first housing 40. The fresh air inlet 411 needs to be connected to the outside air through a pipe. When the fresh air inlet 411 is installed on the top wall 403, it can utilize the space above the ceiling 6 to install a bend structure in a concealed manner. After passing through the wall of the balcony 600, the pipe connects to the outside air.

[0232] Furthermore, the fresh air inlet 411 can be positioned close to the rear side wall 402 of the first housing 40. When the fresh air inlet 411 is positioned close to the rear side wall 402 of the first housing 40, the fresh air inlet 411 can be connected to the wall through a short inlet pipe with minimal bends, thereby ensuring that external fresh air can be supplied into the first housing 40 with low resistance and a large flow rate. In addition, when the fresh air inlet 411 is positioned near the rear side wall 402, interference with other pipes at the top can be avoided, ensuring that the pipes above the top wall 403 of the first housing 40 are arranged in the simplest and most reasonable way.

[0233] In this embodiment, the openings on the top wall 403 of the first housing 40 for passing through water pipes and refrigerant pipes can be located between the exhaust port 413 and the fresh air inlet 411, specifically in the middle of the top wall 403, corresponding to the positions of the first heat exchanger 21 and the second heat exchanger 22 inside the first housing 40. This arrangement helps to reduce the length of the water and refrigerant pipes connecting the first heat exchanger 21 to the top wall 403 within the first housing 40, and also helps to reduce the length of the refrigerant pipe connecting the second heat exchanger 22 to the top wall 403 within the first housing 40. This results in a compact pipe arrangement inside the first housing 40, requiring less space, and thus helps to achieve a miniaturized design for the first housing 40.

[0234] The return air vent 412 is located on the side wall or bottom wall 404 of the first housing 40.

[0235] In this embodiment, the return air vent 412 can be located on the side wall of the first housing 40 or on the bottom wall 404 of the first housing 40. The return air vent 412 is part of the air inlet and is also located away from the exhaust vent 413. When the exhaust vent 413 can be located on the top wall 403 and close to the first side wall of the first housing 40, and when the fresh air vent 411 can be located on the top wall 403 of the first housing 40 and close to the second side wall of the first housing 40, the return air vent 412 can be located on the second side wall or on the bottom wall 404 close to the second side wall.

[0236] In this embodiment, the fan 23 may include a fresh air fan 41 and a supply air fan 51. When the fresh air fan 41 is activated, it can simultaneously generate negative pressure near the fresh air inlet 411 and the return air inlet 412, thereby drawing both external and indoor air into the first housing 40. That is, when the fresh air inlet 411 is located on the top wall 403 and the return air inlet 412 is located on the side wall or bottom wall 404 near the fresh air inlet 411, the same fresh air fan 41 can be used to draw in both types of air.

[0237] In some embodiments, the host processing module 4 further includes an air purification unit 43, which is disposed between the air inlet and the second heat exchanger 22 and / or between the second heat exchanger 22 and the air outlet 502. The air purification unit 43, the first heat exchanger 21, and the second heat exchanger 22 are arranged laterally in the first housing 40. The front sidewall 401 of the first housing 40 is detachable or openable for removing the air purification unit 43.

[0238] In this embodiment, the host processing module 4 may also include an air purification unit 43. Depending on the location of the air purification unit 43, its functions and forms may vary slightly.

[0239] For example, the air purification unit 43 may include a first filter element disposed between the air inlet and the second heat exchanger 22. Along the airflow direction, the air purification unit 43 may be located downstream of the air inlet and upstream of the second heat exchanger 22. The air purification unit 43 is used to purify the air flowing into the air inlet. When the air inlet includes a fresh air inlet 411 and a return air inlet 412, the first filter element may include a fresh air filter element disposed downstream of the fresh air inlet 411 and a medium-efficiency filter element disposed downstream of the return air inlet 412. It should be noted that the medium-efficiency filter element may be disposed downstream of the return air inlet 412. For example, when the return air inlet 412 is disposed on the second side wall of the first housing 40, the medium-efficiency filter element may be disposed against the second side wall, either inside or outside the first housing 40. When the medium-efficiency filter element is placed inside the first housing 40, the first housing 40 can be used to protect the medium-efficiency filter element, and at the same time, the maximum lateral size of the whole machine processing module can be reduced.

[0240] Alternatively, the air purification unit 43 may include a second filter element disposed between the second heat exchanger 22 and the air outlet 502. Specifically, along the air flow direction, the air purification unit 43 may be disposed downstream of the second heat exchanger 22 and upstream of the exhaust outlet 413. The air purification unit 43 is used to purify the air after heat exchange through the second heat exchanger 22 before discharging it through the exhaust outlet 413. Specifically, the second filter element may be a high-efficiency filter element. Since the exhaust outlet 413 is disposed on the top wall 403 of the first housing 40, the air flow path within the first housing 40 is generally transverse. In order to uniformly guide the transversely flowing air to the exhaust outlet 413 of the top wall 403, the high-efficiency filter element may be inclined at a certain angle, and its projection toward the exhaust outlet 413 may cover the exhaust outlet 413, so as to ensure that the air flowing out of the exhaust outlet 413 is filtered by the high-efficiency filter element.

[0241] Alternatively, the air purification unit 43 may include a first filter element disposed between the air inlet and the second heat exchanger 22, and a second filter element disposed between the second heat exchanger 22 and the air outlet 502. Specifically, the specific arrangement and form of the first and second filter elements can be referred to the above description, and will not be repeated here. It should be noted that the specific forms of the first and second filter elements described in this application are merely illustrative examples. Those skilled in the art may make other modifications based on the technical essence of this application, but as long as the functions and effects achieved are the same as or similar to those of this application, they should all be covered within the scope of protection of this application.

[0242] In this embodiment, the first heat exchanger 21 and the second heat exchanger 22 are arranged laterally in the first housing 40, specifically, both the first heat exchanger 21 and the second heat exchanger 22 are arranged along the lateral dimension of the main unit processing module 4. Furthermore, the air purification unit 43 can also be arranged laterally within the first housing 40. Taking the air purification unit 43 as a filter element with a predetermined thickness as an example, the thickness direction of the filter element is arranged along the lateral dimension of the main unit processing module 4. This arrangement maximizes the utilization of the lateral dimension of the main unit processing module 4, allowing the core components to be installed and arranged within the first housing 40 of the main unit processing module 4. Furthermore, it allows for effective control of the lateral dimension of the main unit processing module 4, preventing it from becoming excessively large and improving the adaptability of the main unit processing module 4 installation. Specifically, the lateral dimension of the main unit processing module 4 (i.e., the length dimension of the first housing 40) can be controlled to within 900 mm or even smaller, thereby enabling it to adapt to the depth dimensions of all balconies 600.

[0243] Furthermore, the air purification unit 43 is a relatively consumable component and needs to be replaced periodically after a predetermined period of use. When it is inserted into the first housing 40 with its thickness facing the front and rear side walls 402 and its width dimension, the air purification unit 43 can be replaced by plugging and unplugging.

[0244] The front sidewall 401 of the first housing 40 is detachable or openable for removing the air purification unit 43. When the front sidewall 401 of the first housing 40 is detachable or openable, the air purification unit 43 can be easily replaced.

[0245] like Figure 9 As shown, in one embodiment, the air inlet includes a fresh air inlet 411 and a return air inlet 412. Along the direction of air flow, the air inlet, the first heat exchanger 21, the second heat exchanger 22, and the air purification unit 43 are arranged in sequence.

[0246] In this embodiment, the air inlet may include a fresh air inlet 411 connected to the outside and a return air inlet 412 connected to the inside. Outside air can flow into the first housing 40 through the fresh air inlet 411, and indoor air can flow into the first housing 40 through the return air inlet 412. After the outside air and indoor air flow into the first housing 40, they need to mix and exchange heat with the second heat exchanger 22. The air after exchanging heat with the second heat exchanger 22 is then purified by the air purification unit 43 and discharged from the first housing 40 through the exhaust port 413. Therefore, the air inlet, the second heat exchanger 22, and the air purification unit 43 are arranged sequentially along the airflow channel 222.

[0247] For the first heat exchanger 21, a temperature sensor for detecting water temperature is usually installed on the water flow channel 212. If the first heat exchanger 21 is located downstream of the second heat exchanger 22, then in cooling mode, if the temperature detected by the temperature sensor is too low when the cold air flowing through the second heat exchanger 22 flows through the first heat exchanger 21, it may trigger the anti-freeze protection mechanism of the first heat exchanger 21, which may cause the corresponding component to malfunction, thereby increasing energy consumption and potentially reducing the lifespan of the component.

[0248] Furthermore, regarding the first heat exchanger 21 and the second heat exchanger 22 within the first housing 40, both are equipped with refrigerant flow channels. For example, during cooling, the air flowing in from the air inlet is at a relatively high temperature, and condensation may occur on the surfaces of the first heat exchanger 21 and the second heat exchanger 22 as it flows through them. The air purification unit 43 itself is a component that is not prone to condensation. When the air inlet, the first heat exchanger 21, the second heat exchanger 22, and the air purification unit 43 are arranged sequentially along the airflow direction, it is equivalent to separating the components prone to condensation from the air purification unit 43. This facilitates centralized treatment of condensation generated by these components. For example, a water collection tray for collecting condensate can be provided at the bottom of the first heat exchanger 21 and the second heat exchanger 22. Furthermore, achieving dry and wet separation helps ensure a longer service life for the air purification unit 43.

[0249] In one embodiment, the first heat exchanger 21 is vertically disposed near or close to the rear sidewall 402 or the front sidewall 401 of the first housing 40.

[0250] In this embodiment, when the first heat exchanger 21 is vertically arranged close to or adjacent to the rear sidewall 402 or front sidewall 401 of the first housing 40, along the transverse direction ( Figure 5As shown in the horizontal direction X, a space can be left open to facilitate the full mixing of indoor air flowing in from the air inlet (specifically, the external space flowing in from the fresh air inlet 411 and the indoor air flowing in from the return air inlet 412). This not only makes the temperature of the mixed air more uniform, but also makes the flow field of the mixed air more stable. When it passes through the second heat exchanger 22, it can perform heat exchange more fully and improve the heat exchange efficiency.

[0251] Furthermore, when the first heat exchanger 21 is vertically positioned close to or adjacent to the rear sidewall 402 or front sidewall 401 of the first housing 40, it effectively ensures that at least the space in the middle of the second heat exchanger 22 is left unoccupied, and the heat exchange efficiency in the middle of the second heat exchanger 22 is the highest. In this case, the mixed air can flow along the flow channel in the middle of the second heat exchanger 22 to the second heat exchanger 22, achieving sufficient contact and heat exchange with the middle region of the second heat exchanger 22, thereby achieving a high heat exchange efficiency.

[0252] The host processing module 4 may further include a controller, which may be in the form of an electronic control board or an electronic control box 46. When the first heat exchanger 21 is vertically arranged near the rear side wall 402 of the first housing 40, the controller may be vertically arranged near the front side wall 401 of the first housing 40; when the first heat exchanger 21 is vertically arranged near the front side wall 401 of the first housing 40, the controller may be vertically arranged near the rear side wall 402 of the first housing 40. This ensures that the flow channel in the middle of the second heat exchanger 22 is not obstructed. Furthermore, since the controller is located upstream of the second heat exchanger 22, airflow can also be used to dissipate heat from the controller.

[0253] Please refer to the following: Figure 7 , Figure 8 and Figure 9 In one embodiment, the host processing module 4 further includes a wet film humidifier 65 disposed within the first housing 40. The wet film humidifier 65 is connected to a purified water inflow pipe 63, through which purified water can flow into the wet film humidifier 65. The purified water inflow pipe 63 passes through the top wall 403 of the first housing 40, and a solenoid valve 64 is also disposed on the purified water inflow pipe 63 for controlling the opening and closing of the purified water inflow pipe 63.

[0254] In this embodiment, the main unit processing module 4 may also be equipped with a humidity regulating mechanism, which can be used to humidify the air flowing into the room. In particular, when the indoor air handling system is running in heating mode, a humidity regulating mechanism can be provided on or downstream of the second heat exchanger 22. When the mixed gas consisting of externally introduced air and indoor return air flows through the second heat exchanger 22, it can come into contact with the humidity regulating mechanism, thereby increasing the humidity of the air supplied to the room and thus achieving the purpose of regulating indoor humidity.

[0255] The principle by which the humidity regulating mechanism regulates humidity can vary depending on the form of the humidity regulating mechanism. For example, the humidity regulating mechanism can be in the form of a wet film humidifier 65 located upstream of the second heat exchanger 22. When the humidity regulating mechanism is a wet film humidifier 65, the wet film humidifier is connected to a clean water inflow pipe 63, through which clean water can flow into the wet film humidifier 65, providing the clean water required for humidification.

[0256] Specifically, the purified water inflow pipe 63 can be installed on the top wall 403 of the first housing 40, close to the installation positions of the refrigerant pipe and water pipe on the top wall 403. On the one hand, this can minimize the installation volume required by the indoor air handling system. On the other hand, when multiple pipes are centrally installed, it is convenient for operators to perform centralized installation and maintenance operations in the same location.

[0257] A solenoid valve is also installed on the purified water inlet pipe 63. The solenoid valve is used to control the opening and closing of the purified water inlet pipe. By controlling the opening and closing time of the solenoid valve, the duration of purified water supply to the wet film humidifier 65 can be controlled, thereby regulating the humidity parameters supplied by the wet film humidifier 65. Of course, the regulation of the humidity parameters of the wet film humidifier 65 is not limited to the above examples. For example, the humidity can also be regulated by controlling the amount of purified water sprayed onto the wet film of the wet film humidifier 65, etc.

[0258] In one embodiment, the air inlet includes a fresh air inlet 411 and a return air inlet 412. Along the direction of air flow, the air inlet, the first heat exchanger 21, the second heat exchanger 22, the wet film humidifier 65, and the air purification unit 43 are arranged in sequence.

[0259] Based on the above-mentioned arrangement of the air inlet, the first heat exchanger 21, the second heat exchanger 22, and the air purification unit 43 along the direction of air flow, this embodiment of the application will provide a supplementary explanation by adding a wet film humidifier 65 as an example.

[0260] In this embodiment, for the implementation with the wet film humidifier 65, the wet film humidifier 65 can be located downstream of the second heat exchanger 22 and upstream of the air purification unit 43 along the air flow direction. This arrangement allows the wet film humidifier 65 to humidify the air processed by the second heat exchanger 22. Furthermore, since the wet film humidifier 65 may drip water downwards during use, placing it close to the second heat exchanger 22 facilitates unified drainage of the wet film humidifier 65 and other components prone to generating refrigerant water.

[0261] In one embodiment, the host processing module 4 may further include a first water receiving tray 66, which is located below the first heat exchanger 21 and the second heat exchanger 22 and is used to receive the condensate from the first heat exchanger 21 and the second heat exchanger 22.

[0262] Alternatively, the host processing module 4 may further include a first water receiving tray 66 and a wet film humidifier 65. The first water receiving tray 66 is located below the first heat exchanger 21, the second heat exchanger 22 and the wet film humidifier 65, and is used to receive the condensate from the first heat exchanger 21, the second heat exchanger 22 and the wet film humidifier 65.

[0263] In this embodiment, for components prone to condensation, a first water collection tray 66 is provided, positioned directly below the component to collect the condensate and discharge it centrally. For example, when the component prone to condensation includes a first heat exchanger 21 and a second heat exchanger 22, the first water collection tray 66 is located directly below the first heat exchanger 21 and the second heat exchanger 22; when the component prone to condensation includes a first heat exchanger 21, a second heat exchanger 22, and a wet film humidifier 65, the first water collection tray 66 is located directly below the first heat exchanger 21, the second heat exchanger 22, and the wet film humidifier 65.

[0264] Furthermore, the host processing module 4 may also include a second water receiving tray 67, which is located below the first water receiving tray 66 and the downward projection of the first water receiving tray 66 falls entirely into the second water receiving tray 67. The first water receiving tray 66 has a first drain pipe, and the second water receiving tray 67 has a second drain pipe. The first drain pipe is inserted into the second drain pipe and is spaced apart from the outer wall of the first drain pipe and the inner wall of the second drain pipe.

[0265] In this embodiment, the host processing module 4 may also include a second water receiving tray 67, which is used to receive a small amount of condensate that may be generated by other components and to discharge this condensate in a timely manner to prevent it from accumulating in the first housing 40 and breeding bacteria, etc.

[0266] The second water receiving tray 67 is located directly below the first water receiving tray 66. Specifically, the second water receiving tray 67 can be installed on the bottom wall 404 of the first housing 40. The surface area of ​​the second water receiving tray 67 can be the same as or similar to the surface area of ​​the bottom wall 404.

[0267] The first water receiving tray 66 is provided with a first drain pipe, and the second water receiving tray 67 is provided with a second drain pipe. The upper first drain pipe can be inserted into the lower second drain pipe and is spaced apart from the inner wall of the second drain pipe, leaving a flow gap for draining condensate from the second water receiving tray.

[0268] When the first drain pipe and the second drain pipe are installed inside and outside each other, the pipe layout can be simplified and the number of openings on the first housing 40 can be reduced, making the structure inside the first housing 40 more compact. In addition, since the downward projection of the first water receiving tray 66 falls completely into the second water receiving tray 67, even if the first drain pipe of the first water receiving tray 66 is blocked or other problems occur, and the condensate accumulated in the first water receiving tray 66 overflows, it can flow into the second water receiving tray 67 under the action of gravity, thereby using the second water receiving tray 67 for drainage, ensuring the reliability of drainage.

[0269] like Figure 10 As shown, in one embodiment, the air supply module 5 includes a fan box and an air supply fan 51, the air supply fan 51 being disposed within the fan box, and the impeller of the air supply fan 51 rotating along the longitudinal direction (i.e., Figure 5 The height shown extends in the Y direction.

[0270] In this embodiment, the air supply module 5 may include a fan housing and an air supply fan 51 disposed within the fan housing. To achieve better noise reduction, the air supply module 5, which has a second housing 50, can be installed completely above the ceiling 6. To install the air supply module 5 on the ceiling 6, which has a limited height, the air supply fan 51 is installed horizontally.

[0271] Specifically, for the air supply fan 51, the thickness of its impeller is relatively small compared to its outer perimeter. To minimize the size required by the air supply module 5 in the height direction Y, the rotation axis of the impeller of the air supply fan 51 extends along the longitudinal direction. Of course, in this embodiment, it is not excluded that the rotation axis of the impeller of the air supply fan 51 forms a certain angle with the longitudinal direction. In principle, any embodiment that ensures the second housing 50 of the air supply module 5 can be installed above the ceiling 6 can be applied to this embodiment. When the rotation axis of the impeller of the air supply fan 51 extends entirely along the longitudinal direction, the size required by the air supply module 5 in the height direction Y is minimized.

[0272] In one embodiment, the blower 51 includes a first volute 511, a first impeller disposed within the first volute 511, a second volute 512, and a second impeller disposed within the second volute 512. The rotation axes of the first impeller and the second impeller are offset and both extend in the longitudinal direction. At least a portion of the front part of the surrounding plate 513 of the first volute 511 and at least a portion of the rear part of the surrounding plate 513 of the second volute 512 are the same plate, or at least a portion of the front part of the surrounding plate 513 of the first volute 511 and at least a portion of the rear part of the surrounding plate 513 of the second volute 512 are different plates that are close to each other.

[0273] For a suspended ceiling 6 used on a balcony 600, its height is typically less than 350 mm, making it difficult to fully install existing large fans above it. In a specific scenario where a clothes rack or similar device needs to be installed below the suspended ceiling 6, the height of the suspended ceiling 6 usually needs to be further reduced, typically to within 250 mm. This makes it even more difficult to fully install existing large fans above the suspended ceiling 6.

[0274] In this embodiment, the air supply fan 51 can be composed of two smaller fans. The combination of two smaller fans 23, compared to a single larger fan, reduces the installation size of the air supply fan 51, making the size of the second housing 50 for mounting the air supply fan 51 as small as possible, thus allowing it to be installed completely above the ceiling 6. Furthermore, the combination of two smaller fans 23, compared to a single larger fan, also reduces the noise generated during operation. Specifically, when the large fan and the two smaller fans operate at the same speed, the noise generated by the large fan is at least 3 decibels higher.

[0275] In order to minimize the space required during the actual installation of the two fans 23, the rotation shafts of both fans 23 extend in the longitudinal direction. Furthermore, the first impeller rotation shaft of one fan 23 and the second impeller rotation shaft of the other fan 23 can be staggered.

[0276] Specifically, at least a portion of the front part of the surrounding plate 513 of the first volute 511 and at least a portion of the rear part of the surrounding plate 513 of the second volute 512 are made of the same plate, and adjacent surrounding plates 513 of the two volutes can be shared, thereby helping to reduce volume. Furthermore, at least a portion of the front part of the surrounding plate 513 of the first volute 511 and at least a portion of the rear part of the surrounding plate 513 of the second volute 512 are different plates that are close to each other. The gap between the two close surrounding plates 513 can be zero or a small dimension. The specific value of this gap can vary depending on the specific mechanism of the fan 23, such as the curvature of the surrounding plate 513, and this application does not impose a single numerical limitation.

[0277] In one embodiment, the fan box is horizontally placed above the suspended ceiling 6. A first air inlet 501 is provided on each of the two adjacent sides of the fan box. The fan box also includes a sealing plate. When one of the first air inlets 501 is connected to the exhaust port 413 through the pipeline, the sealing plate is used to block the other first air inlet 501.

[0278] In this embodiment, the fan box has a box-like structure with relative length, width, and thickness dimensions. The thickness dimension can be the minimum dimension. The fan box can be horizontally placed above the suspended ceiling 6, specifically, the thickness dimension of the fan box extends along the height direction Y. The fan box has opposite top and bottom surfaces, opposite front and rear sides, and opposite left and right sides. Taking the right side of the fan box as an example, an air outlet 502 can be provided on the right side, while first air inlets 501 can be provided on the bottom and front sides respectively. During installation, one of the first air inlets 501 can be rotated to connect to the exhaust outlet 413 via a pipe, while the other first air inlet 501 can be blocked by a sealing plate, thereby improving the adaptability of the fan box installation.

[0279] like Figure 10As shown, in one embodiment, a cavity 514 is provided between the air outlet 515 of the blower 51 and the air outlet 502 of the second housing 50. This cavity 514 is a hollow cavity with a certain flow cross-sectional dimension. Specifically, the cavity 514 can be formed by a portion of the second housing 50 and a partition 516 disposed at the air outlet 515. For example, the cavity 514 can be a regular cuboid chamber, with the air outlet 515 and the air outlet 502 directly opposite each other. Of course, the specific structure of the cavity 514 is not limited to the above examples, and those skilled in the art can make adaptive adjustments according to actual needs.

[0280] The air discharged from the air outlet 515 of the blower 51 first passes through the cavity 514 for noise reduction before being discharged through the air outlet 502 of the second housing 50, thus ensuring a better quiet experience for the user. The flow cross-sectional dimension of the cavity 514 is larger than the flow area of ​​the air outlet 515. When airflow flows from the smaller flow area of ​​the air outlet 515 into the larger flow cross-sectional dimension of the cavity 514, the cavity 514 can reduce the aerodynamic noise of the airflow exiting from the air outlet 515, allowing for smoother airflow and achieving the purpose of noise reduction.

[0281] In one embodiment, the host processing module 4 may further include a heating unit 45.

[0282] Located downstream of the air purification unit 43 (e.g., a high-efficiency filter) along the airflow direction, the heating unit 45 heats the air exiting the air purification unit 43 to reduce humidity. Specifically, the heating unit 45 can be an electric heating element, such as a PTC heating rod. Multiple electric heating elements can be arranged at intervals on the cross-section of the exhaust port 413 to uniformly heat the air.

[0283] In a specific application scenario, such as during the plum rain season when users have a high demand for dehumidification but a low demand for temperature regulation, the heating unit 45 can be activated to dehumidify the air introduced through the air inlet. Of course, in the above scenario, the cooling mode can also be activated, allowing the compressor 1 of the outdoor unit 100 to operate at a lower power. By combining cooling dehumidification with heating dehumidification by the heating unit 45, a highly efficient dehumidification effect can be achieved.

[0284] In this application embodiment, based on the above-described indoor air treatment system, a corresponding control method is also provided.

[0285] The indoor air handling system may include an outdoor unit 100, an indoor air handling unit 200, an indoor air delivery terminal 31, and an indoor radiant terminal 32. The indoor air handling unit 200 includes a first heat exchanger 21 and a second heat exchanger 22. The first heat exchanger 21 includes a first refrigerant channel 211, and the second heat exchanger 22 includes a second refrigerant channel 221. The first refrigerant channel 211 and the second refrigerant channel 221 can be connected to the refrigerant inlet 11 and the refrigerant outlet 12 of the outdoor unit 100. The refrigerant output from the refrigerant outlet 12 can be selectively distributed to the first refrigerant channel 211 and / or the second refrigerant channel 221; the first heat exchanger 21 also includes a water channel 212, in which water can exchange heat with the refrigerant in the first refrigerant channel 211, and the water channel 212 can be connected to the inlet and outlet of the indoor radiant terminal 32; the second heat exchanger 22 also includes an air channel 222, through which air can exchange heat with the refrigerant in the second refrigerant channel 211. The refrigerant in 21 undergoes heat exchange. The indoor air handling unit 200 includes an air inlet, an air outlet 502, and a fan 23. Air flowing in from the air inlet is driven by the fan 23 to flow through the air channel 222 and then out from the air outlet 502 to the indoor air delivery terminal 31. The indoor air handling system also includes an air quality detection device 34 for detecting indoor air parameters. The indoor air handling system also includes a damper 310 for adjusting gas flow. The air delivery terminal 31 includes an air duct, and the air valve 310 is disposed on the air duct; the air inlet includes a fresh air inlet 411 and a return air inlet 412, the fresh air inlet 411 is used to connect to the outside to introduce outdoor air, and the return air inlet 412 is used to connect to the inside to introduce indoor air into the indoor air handling unit 200. The fresh air inlet 411 and the return air inlet 412 can be in a state of simultaneous opening to mix the outdoor air and the indoor air in the indoor air handling unit 200.

[0286] In this embodiment, the specific composition of the indoor air treatment system, the functions of each component, and the relative connections can be referred to the specific description of the above-described indoor air treatment system implementation method, and will not be elaborated further here.

[0287] like Figure 11 As shown, specifically, the control method may include the following steps:

[0288] Step S10: Obtain the current indoor air parameters;

[0289] Step S12: If the current indoor air parameters do not meet the preset air parameters, control the refrigerant output from the refrigerant outlet 12 to distribute it to the first refrigerant channel 211 and the second refrigerant channel 221, and control the fan 23 and / or the air valve 310 to operate.

[0290] Step S14: Monitor the subsequent changes in the indoor air parameters;

[0291] Step S16: Based on the subsequent changes in the indoor air parameters, adjust the refrigerant distributed to the first refrigerant channel 211 and the second refrigerant channel 221, and / or adjust the operating status of the fan 23 and / or the air valve 310.

[0292] In step S10, indoor air parameters can be acquired using the air quality detection device 34. Specifically, the form of this control quality detection device can be referred to the detailed description in the above embodiments, and will not be repeated here. The indoor air parameters may include temperature, humidity, and cleanliness.

[0293] In step S12, the current indoor air parameters not meeting the preset air parameters may include at least one of the following: the temperature, the humidity, and the cleanliness not meeting the preset air parameter requirements.

[0294] When the current indoor air parameters do not meet the preset air parameter requirements, the refrigerant and air volume can be adjusted. Specifically, the refrigerant output from the refrigerant outlet 12 can be controlled to be distributed to the first refrigerant flow channel 211 and the second refrigerant flow channel 221, and the operation of the fan 23 and / or the air valve 310 can be controlled.

[0295] In one embodiment, when the temperature, humidity, and cleanliness do not meet the preset air parameters, the refrigerant output from the refrigerant outlet 12 can be simultaneously supplied to the first refrigerant channel 211 and the second refrigerant channel 221, the fan 23 can be turned on, and the air valve 310 can be opened, thereby adjusting the temperature, humidity, and cleanliness to meet the preset air parameters as soon as possible.

[0296] In step S14, the changes in the indoor air parameters can be continuously monitored by the air quality detection device 34. Based on the changes in the indoor air parameters subsequently monitored by the air quality detection device 34, step S16 is executed: based on the changes in the indoor air parameters, the refrigerant distributed to the first refrigerant channel 211 and the second refrigerant channel 221 is adjusted, and / or the operating status of the fan 23 and / or the damper 310 is adjusted.

[0297] The following will explain the adjustment of refrigerant and air volume based on the changes in indoor air parameters monitored by the air quality detection device 34.

[0298] Each relatively isolated area (e.g., bedroom, study, living / dining room) can be equipped with an air quality detection device 34. The air quality detection device 34 is used to obtain air parameters (temperature, humidity, and cleanliness). Based on the current air parameters, the refrigerant flow rate and air volume are adjusted so that the air parameters in the current area meet the preset air parameter requirements.

[0299] In the first operating condition, the control method may further include: when the temperature and humidity meet the preset air parameters and the cleanliness does not meet the preset air parameters, reducing but not stopping or stopping the refrigerant supply to the first refrigerant channel 211, reducing but not stopping the refrigerant supply to the second refrigerant channel 221, increasing the speed of the fan 23 and / or increasing the opening of the air valve 310.

[0300] In this embodiment, after the indoor air handling system has operated for a period of time and the temperature and humidity have reached the target levels, if the cleanliness still does not meet the requirements, the cleanliness requirements can be efficiently met by increasing the fresh air supply. Increasing the fresh air supply can be achieved by any of the following: increasing the speed of the fan 23 or increasing the opening of the damper 310. Of course, in this embodiment, increasing the fresh air supply can be achieved in other ways. Those skilled in the art, guided by the technical essence of this application, may make other modifications, but as long as the achieved function and effect are the same as or similar to those of this application, they should all be covered within the scope of protection of this application.

[0301] Generally, there is a certain difference between outdoor and indoor air temperatures. Although the current indoor temperature has reached the target value, in order to prevent the introduced air from causing fluctuations in the indoor temperature field, a smaller refrigerant flow rate can be controlled to flow through the second refrigerant channel 221 of the second heat exchanger 22 to cool the introduced air. During operation, when the fan 23 starts, outdoor air flows in from the air inlet and, driven by the fan 23, flows through the air channel 222 of the second heat exchanger 22 to exchange heat with the refrigerant in the second refrigerant channel 221. After heat exchange, the air flows out from the air outlet 502 to the indoor air delivery terminal 31 (e.g., duct) and is supplied to the corresponding room. This improves cleanliness while maintaining stable indoor temperature and humidity.

[0302] When the refrigerant supply to the second refrigerant channel 221 is reduced but not stopped, the temperature of the introduced fresh air after heat exchange treatment may be close to the current indoor temperature. At this time, the refrigerant supply to the first refrigerant channel 211 can be stopped. Alternatively, in some embodiments, in order to maintain the stability of the indoor temperature field and ensure a more comfortable user experience, the indoor temperature field can be stabilized and regulated simultaneously using both the air and water sides. In this case, while the refrigerant continues to flow through the second refrigerant channel 221 of the second heat exchanger 22 at a low flow rate, the refrigerant also continues to flow through the first refrigerant channel 211 of the first heat exchanger 21 at a low flow rate. The refrigerant in the first refrigerant channel 211 exchanges heat with the water in the water channel 212. After heat exchange, the water flows through the pipe to the indoor radiant terminal 32, thereby exchanging heat with the indoor air through the indoor radiant terminal 32.

[0303] In one specific implementation, when the temperature and humidity meet preset air parameters but the cleanliness does not meet preset air parameters, the refrigerant supply to the first refrigerant channel 211 can be stopped, while the refrigerant supply to the second refrigerant channel 221 can be reduced but not stopped.

[0304] Because the second refrigerant channel 221 can exchange heat with the air channel, the air delivered to the indoor air supply terminal through this air channel can regulate temperature and humidity while also ensuring a sufficient fresh air volume. The first refrigerant channel 211, however, cannot regulate the fresh air volume, meaning it cannot regulate air cleanliness. When the supply to the first refrigerant channel 211 is stopped, and the refrigerant flows only to the second refrigerant channel 221, the required temperature and humidity can be met while simultaneously regulating the fresh air volume, allowing the indoor air cleanliness to quickly meet the required standards.

[0305] In one embodiment, the fan 23 includes a fresh air fan 41 and a supply air fan 51, which can be turned on simultaneously. The fresh air fan 41 is used to introduce outdoor air into the indoor air handling unit 200, and the supply air fan 51 is used to deliver the mixed outdoor air and indoor air into the indoor air delivery terminal 31.

[0306] In the implementation, the specific composition and function of the fan 23 can be referred to the specific description of the above-described implementation of the indoor air treatment system, and will not be repeated here.

[0307] In the second operating condition, the control method may further include: when the temperature, humidity, and cleanliness all meet the preset air parameters, reducing or stopping the refrigerant supply to the first refrigerant channel 211, reducing or stopping the refrigerant supply to the second refrigerant channel 221, reducing the speed of the fresh air fan 41 and controlling the fresh air fan 41 to continue to operate, reducing the speed of the supply air fan 51 and / or reducing the opening of the air valve 310 and continuing to control the supply air fan 51 and the air valve 310 to continue to operate.

[0308] In this embodiment, the method may further include the following operating conditions: after the indoor air handling system has been operating for a period of time, the indoor temperature, humidity, and cleanliness all meet the preset air parameters. At this time, the supply of refrigerant on the air side and / or water side can be reduced, and the amount of fresh air supplied into the room can also be reduced.

[0309] Specifically, due to the continuous need for indoor air renewal, in order to maintain the current indoor air cleanliness requirements, a relatively low fresh air volume can be used to continuously refresh the indoor air after the current indoor cleanliness requirements are met. Specifically, the methods for continuously refreshing the indoor air with a relatively low fresh air volume include any one or a combination of the following: reducing the speed of the fresh air fan 41 while keeping it in operation; reducing the speed of the supply air fan 51 and / or reducing the opening of the damper 310 while keeping both the supply air fan 51 and the damper 310 in operation.

[0310] Generally, there is a certain difference between outdoor air temperature and indoor air temperature. Although the current indoor temperature has reached the target value, to prevent fluctuations in the indoor temperature field caused by the introduced air, a smaller refrigerant flow rate can be controlled to flow through the second refrigerant channel 221 of the second heat exchanger 22 to regulate the introduced air, while stopping the refrigerant supply to the first refrigerant channel 211; alternatively, a smaller refrigerant flow rate can be controlled to flow through the first refrigerant channel 211 of the first heat exchanger 21 to stabilize the indoor temperature field; or a smaller refrigerant flow rate can be controlled to flow through the second refrigerant channel 221 of the second heat exchanger 22 to regulate the introduced air, while simultaneously controlling a smaller refrigerant flow rate to flow through the first refrigerant channel 211 of the first heat exchanger 21 to stabilize the indoor temperature field; furthermore, when the difference between the outdoor and indoor air temperatures is small, the refrigerant supply to the first refrigerant channel 211 and the second refrigerant channel 221 can be stopped simultaneously, thereby maintaining the indoor air parameters to meet the preset air parameter requirements.

[0311] In one specific implementation, when the temperature, humidity, and cleanliness all meet the preset air parameters, in order to maintain the indoor air at all times while ensuring that the cleanliness, temperature, and humidity requirements are consistently met, the refrigerant supply to the first refrigerant channel 211 and the refrigerant supply to the second refrigerant channel 221 can be reduced. Thus, the temperature can be regulated using the first refrigerant channel 211, and the temperature, humidity, and cleanliness can be regulated using the second refrigerant channel 221, ensuring that the indoor air always meets the standards and providing users with a better comfort experience.

[0312] Alternatively, in another specific implementation, when the temperature, humidity, and cleanliness all meet the preset air parameters, the refrigerant supply to the first refrigerant channel 211 can be reduced, and the refrigerant supply to the second refrigerant channel 221 can be stopped. Since the second refrigerant channel 221 may be connected to a forced convection heat exchange terminal 33, which can easily generate noise, if the user desires a quieter experience, the refrigerant supply to the second refrigerant channel 221 can be stopped when the temperature, humidity, and cleanliness all meet the preset air parameters, thereby causing the forced convection heat exchange terminal 33 to cease operation. Subsequent adjustments can be made based on changes in indoor air parameters and the user's needs.

[0313] In one embodiment, the fan 23 includes a fresh air fan 41 and a supply air fan 51, which can be turned on simultaneously. The fresh air fan 41 is used to introduce outdoor air into the indoor air handling unit 200, and the supply air fan 51 is used to deliver the mixed outdoor air and indoor air into the indoor air delivery terminal 31.

[0314] In the implementation, the specific composition and function of the fan 23 can be referred to the specific description of the above-described implementation of the indoor air treatment system, and will not be repeated here.

[0315] In the third operating condition, the control method may further include: when the temperature and humidity do not meet the preset air parameters and the cleanliness meets the preset air parameters, continuing to supply refrigerant to the first refrigerant channel 211 and the second refrigerant channel 221, reducing the speed of the fresh air fan 41, increasing the speed of the supply air fan 51 and / or the opening of the air valve 310.

[0316] It should be noted that when refrigerant continues to be supplied to the first refrigerant channel 211 and the second refrigerant channel 221, the refrigerant flow rate in the first refrigerant channel 211 and the second refrigerant channel 221 can be automatically matched with the corresponding parameters according to the current system load. For example, the controller can pre-store the correspondence between preset air parameters, operating load and the flow rate in the first refrigerant channel 211 and the second refrigerant channel 221, and the flow rate in the first refrigerant channel 211 and the second refrigerant channel 221 can be determined based on the current air parameters and the correspondence.

[0317] Furthermore, when the temperature and humidity do not meet the preset air parameters but the cleanliness does meet the preset air parameters, since the current temperature and humidity do not meet the requirements, especially the temperature parameter, which is the air parameter that has the greatest impact on the user experience, has not met the requirements, it can be the same as or similar to the situation where the temperature, humidity and cleanliness do not meet the requirements. That is, the current flow rate in the first refrigerant channel 211 and the second refrigerant channel 221 can be maintained at a flow rate that is basically the same as or the same as the situation where the three parameters are not met, so that the temperature and humidity can reach the requirements of the preset air parameters as soon as possible.

[0318] In this embodiment, the method may also include the following operating conditions: when the temperature and humidity do not meet the preset air parameters and the cleanliness meets the preset air parameters, refrigerant can continue to be supplied to the first refrigerant channel 211 and the second refrigerant channel 221, while reducing the amount of air introduced outdoors and increasing the amount of air supplied indoors.

[0319] Specifically, since the cleanliness of the indoor air already meets the preset air parameter requirements, the amount of air introduced from the outside can be reduced by lowering the speed of the fresh air fan 41.

[0320] Furthermore, since the temperature and humidity do not yet meet the preset air parameter requirements, the airflow into the room can be ensured by increasing the speed of the supply fan 51 and / or the opening of the air valve 310 while continuing to supply refrigerant to the first refrigerant channel 211 and the second refrigerant channel 221. This airflow into the room flows through the air channel 222 of the second heat exchanger 22 before exchanging heat with the second refrigerant channel 221, and then is delivered into the room through the indoor air delivery terminal 31 via the supply fan 51. Therefore, it can regulate the indoor temperature. In addition, due to the reduced amount of external air, a relatively high proportion of return air needs to be introduced from the room through the return air vent 412 to ensure the airflow into the room. When a large amount of return air is introduced from the room, the indoor air circulates rapidly, which is beneficial for efficient regulation of the indoor temperature and humidity, thus ensuring that the indoor temperature meets the preset air parameter requirements in an energy-saving manner.

[0321] Furthermore, since the current humidity does not meet the requirements, the humidity can be adjusted according to different seasons. For example, when the indoor air handling system is operating in cooling mode, it supplies air to the room using the heat exchange terminal on the air side, adjusting the humidity (usually by reducing it) while regulating the temperature, thus ensuring that the humidity meets the target requirements. When the indoor air handling system is operating in heating mode, a humidity regulating mechanism can be installed at the second heat exchanger 22. When the mixed gas consisting of externally introduced air and indoor return air flows through the second heat exchanger 22, it can come into contact with the humidity regulating mechanism, thereby increasing the humidity in the air supplied to the room, and thus achieving the purpose of regulating indoor humidity.

[0322] In one embodiment, the fan 23 includes a fresh air fan 41 and a supply air fan 51, which can be turned on simultaneously. The fresh air fan 41 is used to introduce outdoor air into the indoor air handling unit 200, and the supply air fan 51 is used to deliver the mixed outdoor air and indoor air into the indoor air delivery terminal 31.

[0323] In the implementation, the specific composition and function of the fan 23 can be referred to the specific description of the above-described implementation of the indoor air treatment system, and will not be repeated here.

[0324] In the fourth operating condition, the control method may further include: when the temperature and the cleanliness do not meet the preset air parameters and the humidity meets the preset air parameters, continuing to supply refrigerant to the first refrigerant channel 211 and the second refrigerant channel 221, increasing the speed of the fresh air fan 41, increasing the speed of the supply air fan 51 and / or the opening of the air valve 310.

[0325] In this embodiment, the method may also include the following operating conditions: when the temperature and the cleanliness do not meet the preset air parameters, refrigerant is continued to be supplied to the first refrigerant channel 211 and the second refrigerant channel 221, and at the same time, the speed of the fresh air fan 41, the speed of the supply air fan 51 and / or the opening of the air valve 310 may be increased.

[0326] Specifically, since the current indoor air cleanliness does not meet the preset air parameter requirements, the speed of the fresh air fan 41 can be increased to increase the amount of air introduced from the outside, thereby enabling the indoor air cleanliness to meet the preset air parameter requirements as soon as possible.

[0327] Since the temperature does not meet the preset air parameter requirements, the air volume delivered into the room can be increased by increasing the speed of the air supply fan 51 and / or the opening of the air valve 310 while continuing to supply refrigerant to the first refrigerant channel 211 and the second refrigerant channel 221.

[0328] The airflow entering the room passes through the air channel 222 of the second heat exchanger 22 before entering the room, exchanging heat with the second refrigerant channel 221, and then is delivered into the room through the indoor air delivery terminal 31 via the blower 51. Therefore, it can regulate the indoor temperature. Increasing the airflow into the room can improve the rate at which the air side regulates the indoor temperature. At the same time, heat exchange is performed between the first refrigerant channel 211 and the water channel 212 in the first heat exchanger 21, thereby delivering the heat-exchanged water to the heat exchange terminal (e.g., indoor radiant terminal 32) connected to the water channel 212. This water, through heat exchange with the indoor air, can also regulate the indoor air temperature. Overall, the air side and the water side work together to efficiently regulate the indoor temperature to the preset air parameters.

[0329] In one embodiment, the fan 23 includes a fresh air fan 41 and a supply air fan 51, which can be turned on simultaneously. The fresh air fan 41 is used to introduce outdoor air into the indoor air handling unit 200, and the supply air fan 51 is used to deliver the mixed outdoor air and indoor air into the indoor air delivery terminal 31.

[0330] In the implementation, the specific composition and function of the fan 23 can be referred to the specific description of the above-described implementation of the indoor air treatment system, and will not be repeated here.

[0331] In the fifth operating condition, the control method may further include: when the humidity and the cleanliness both meet the preset air parameters and the temperature does not meet the preset air parameters, continuing to supply refrigerant to the first refrigerant channel 211 and the second refrigerant channel 221, reducing the speed of the fresh air fan 41, increasing the speed of the supply air fan 51 and / or the opening of the air valve 310.

[0332] In this embodiment, the method may also include the following operating conditions: when the humidity and the cleanliness both meet the preset air parameters and the temperature does not meet the preset air parameters, refrigerant can continue to be supplied to the first refrigerant channel 211 and the second refrigerant channel 221, while reducing the amount of air introduced outdoors and increasing the amount of air supplied indoors.

[0333] Specifically, since the cleanliness of the indoor air already meets the preset air parameter requirements, the amount of air introduced from the outside can be reduced by lowering the speed of the fresh air fan 41.

[0334] Furthermore, since the temperature does not yet meet the preset air parameter requirements, while continuing to supply refrigerant to the first refrigerant channel 211 and the second refrigerant channel 221, the airflow into the room can be ensured by increasing the speed of the supply fan 51 and / or the opening of the air valve 310. This airflow into the room flows through the air channel 222 of the second heat exchanger 22 before entering the room, exchanging heat with the second refrigerant channel 221, and then is delivered into the room through the indoor air delivery terminal 31 via the supply fan 51. Therefore, it can regulate the indoor temperature. In addition, due to the reduced amount of external air introduced, to ensure the airflow into the room, a relatively high proportion of return air needs to be introduced from the room through the return air vent 412. When a large amount of return air is introduced from the room, the indoor air circulates rapidly, which is beneficial for efficient temperature regulation and energy-saving methods to ensure that the indoor temperature meets the preset air parameter requirements.

[0335] In one embodiment, the fan 23 includes a fresh air fan 41 and a supply air fan 51, which can be turned on simultaneously. The fresh air fan 41 is used to introduce outdoor air into the indoor air handling unit 200, and the supply air fan 51 is used to deliver the mixed outdoor air and indoor air into the indoor air delivery terminal 31.

[0336] In the implementation, the specific composition and function of the fan 23 can be referred to the specific description of the above-described implementation of the indoor air treatment system, and will not be repeated here.

[0337] In the sixth operating condition, the control method may further include: when the humidity and the cleanliness do not meet the preset air parameters and the temperature meets the preset air parameters, reducing but not stopping the supply of refrigerant to the first refrigerant channel 211 and the second refrigerant channel 221, increasing the speed of the fresh air fan 41, increasing the speed of the supply air fan 51 and / or the opening of the air valve 310.

[0338] In this embodiment, after the indoor air handling system has operated for a period of time and the temperature has reached the target temperature, if the cleanliness level still does not meet the requirements, the fresh air supply can be increased to efficiently meet the cleanliness requirements. Increasing the fresh air supply can be achieved by any of the following: increasing the speed of the fan 23 or increasing the opening of the damper 310. Of course, in this embodiment, increasing the fresh air supply can be achieved in other ways. Those skilled in the art, guided by the technical essence of this application, may make other modifications, but as long as the achieved function and effect are the same as or similar to those of this application, they should all be covered within the scope of protection of this application.

[0339] Generally, there is a certain difference between outdoor and indoor air temperatures. Although the current indoor temperature has reached the target value, in order to prevent fluctuations in the indoor temperature field caused by the introduced outdoor air, the amount of refrigerant supplied to the first refrigerant channel 211 and the second refrigerant channel 221 can be reduced. For example, a smaller refrigerant flow rate can be controlled to flow through the second refrigerant channel 221 of the second heat exchanger 22 to regulate the introduced outdoor air, and / or a smaller refrigerant flow rate can be controlled to flow through the first refrigerant channel 211, thereby regulating the indoor temperature so that it can always be maintained near the preset target temperature.

[0340] During operation, the refrigerant in the first refrigerant channel 211 exchanges heat with the water in the water channel. The water after heat exchange is supplied to the indoor radiant terminal 32, thereby regulating the indoor temperature and maintaining it near the preset target temperature. At the same time, when the fan 23 is started, the outside air flows in from the air inlet and, driven by the fan 23, flows through the air channel 222 of the second heat exchanger 22 and exchanges heat with the refrigerant in the second refrigerant channel 221. The air after heat exchange flows out from the air outlet 502 to the indoor air delivery terminal 31 (e.g., duct) and is supplied to the corresponding room. While improving cleanliness, it can also maintain the stability of the indoor temperature.

[0341] In this embodiment, in order to maintain the stability of the indoor temperature field and ensure a comfortable user experience, the indoor temperature field can be stabilized and regulated simultaneously using both the air and water sides. At this time, while refrigerant continuously flows through the second refrigerant channel 221 of the second heat exchanger 22 at a low flow rate, refrigerant also continuously flows through the first refrigerant channel 211 of the first heat exchanger 21 at a low flow rate. The refrigerant in the first refrigerant channel 211 exchanges heat with the water in the water channel 212. After heat exchange, the water flows through pipes to the indoor radiant terminal 32, thereby exchanging heat with the indoor air through the indoor radiant terminal 32.

[0342] For example, when the indoor air handling system is operating in cooling mode, it supplies air to the room using the heat exchange terminal on the air side, regulating both temperature and humidity (usually by reducing it) to ensure that the humidity meets the target requirements. When the indoor air handling system is operating in heating mode, a humidity regulating mechanism can be installed at the second heat exchanger 22. When the mixed gas consisting of externally introduced air and indoor return air flows through the second heat exchanger 22, it can come into contact with the humidity regulating mechanism, thereby increasing the humidity in the air supplied to the room and thus achieving the purpose of regulating indoor humidity.

[0343] In one embodiment, the fan 23 includes a fresh air fan 41 and a supply air fan 51, which can be turned on simultaneously. The fresh air fan 41 is used to introduce outdoor air into the indoor air handling unit 200, and the supply air fan 51 is used to deliver the mixed outdoor air and indoor air into the indoor air delivery terminal 31.

[0344] In the implementation, the specific composition and function of the fan 23 can be referred to the specific description of the above-described implementation of the indoor air treatment system, and will not be repeated here.

[0345] In the seventh operating condition, the control method may further include: when the temperature and the cleanliness both meet the preset air parameters and the humidity does not meet the preset air parameters, reducing but not stopping the supply of refrigerant to the first refrigerant channel 211 and the second refrigerant channel 221, reducing the speed of the fresh air fan 41 and controlling the fresh air fan 41 to continue to operate, reducing the speed of the supply air fan 51 and / or reducing the opening of the air valve 310 and continuing to control the supply air fan 51 and the air valve 310 to continue to operate.

[0346] In this embodiment, after the indoor air handling system has been running for a period of time, when the temperature reaches the target temperature and the cleanliness reaches the target cleanliness, the supply of refrigerant on the air side and water side can be reduced, and the amount of fresh air supplied into the room can also be reduced.

[0347] Specifically, due to the continuous need for indoor air renewal, in order to maintain the current indoor air cleanliness requirements, a relatively low fresh air volume can be used to continuously refresh the indoor air after the current indoor cleanliness requirements are met. Specifically, the methods for continuously refreshing the indoor air with a relatively low fresh air volume include any one or a combination of the following: reducing the speed of the fresh air fan 41 while keeping it in operation; reducing the speed of the supply air fan 51 and / or reducing the opening of the damper 310 while keeping both the supply air fan 51 and the damper 310 in operation.

[0348] Generally, there is a certain difference between outdoor and indoor air temperatures. Although the current indoor temperature has reached the target value, in order to prevent the introduced air from causing fluctuations in the indoor temperature field, a smaller refrigerant flow rate can be controlled to flow through the second refrigerant channel 221 of the second heat exchanger 22 to cool the introduced air. At the same time, a smaller refrigerant flow rate can be controlled to flow through the first refrigerant channel 211 of the first heat exchanger 21 to stabilize and regulate the indoor temperature field.

[0349] Since the current humidity does not meet the requirements, the humidity can be adjusted according to different seasons. For example, when the indoor air handling system is running in cooling mode, it supplies air to the room using the heat exchange terminal on the air side, adjusting the humidity (usually by reducing it) while regulating the temperature, so that the humidity can also meet the target humidity requirements. In addition, when the indoor air handling system is also equipped with an independent dehumidification module, such as a heating unit 45 located downstream of the exhaust vent 413, dehumidification can also be performed independently or in conjunction with cooling by activating the heating unit 45.

[0350] When the indoor air handling system is running in heating mode, a humidity regulating mechanism can be installed at the second heat exchanger 22 to regulate humidity. When the mixed gas composed of external air and indoor return air flows through the second heat exchanger 22, it can come into contact with the humidity regulating mechanism, thereby increasing the humidity of the air supplied to the room and thus achieving the purpose of regulating indoor humidity.

[0351] The principle by which the humidity regulating mechanism regulates humidity can vary depending on the form of the humidity regulating mechanism. For example, when the humidity regulating mechanism is in the form of a wet film humidifier 65 located upstream of the second heat exchanger 22, the humidity can be regulated by controlling multiple control directions, such as the on-time of the wet film humidifier 65 and the amount of clean water sprayed onto the wet film of the wet film humidifier 65.

[0352] Overall, the indoor air handling system provided in this application integrates air conditioning, floor heating, fresh air, dehumidification, humidification, and purification, and is a healthy and comfortable system that can truly achieve constant indoor temperature, humidity, oxygen, cleanliness, and quietness.

[0353] The control method provided in this application can flexibly and adaptively adjust indoor temperature and / or humidity and cleanliness according to different situations, and can ultimately efficiently achieve the required temperature, humidity and cleanliness. In subsequent use, if one or more parameters are found to be unsatisfactory, they can be adjusted to within the predetermined air parameter range in a better way, thereby ensuring that users can have a healthy, comfortable and intelligent user experience.

[0354] like Figure 12 As shown, in a specific application scenario, taking temperature, humidity, and cleanliness as examples, when the temperature meets the standard, its status indicator is 1, and when it does not meet the standard, its corresponding status indicator is 0; similarly, when the humidity meets the standard, its status indicator is 1, and when it does not meet the standard, its corresponding status indicator is 0; when the cleanliness meets the standard, its status indicator is 1, and when it does not meet the standard, its corresponding status indicator is 0.

[0355] In the initial state, the temperature, humidity and cleanliness may not meet the standards. At this time, the status identifier of the three parameters is 000. Of course, in the embodiments of this application, it is not ruled out that in the initial state, one or two of the three parameters have already met the standards.

[0356] Taking the example where temperature, humidity, and cleanliness are all below standard, after the air handling system has been running for a period of time, at least one of these three parameters may have met the standard. In this case, the system will enter branch one via path one (P1). The possible conditions for branch one are: 001 Cleanliness only meets the standard, 010 Humidity only meets the standard, 011 Both humidity and cleanliness meet the standard, 100 Temperature only meets the standard, 101 Both temperature and cleanliness meet the standard, and 110 Both temperature and humidity meet the standard. Alternatively, the system can enter branch two via path two (P2), where 111 Temperature, humidity, and cleanliness all meet the standard.

[0357] If the system enters branch one, it may enter branch two via path three (P3) after operating for a period of time; or it may first transition through various scenarios within branch one before entering branch two.

[0358] After entering branch two, during the operation of the air handling system, it may still return to branch one via path four (N1) or directly return to the initial state via path five (N2) due to internal or external factors. Under all the above operating conditions, the air handling system can automatically adjust by calling the corresponding control method to readjust the indoor temperature, humidity, and cleanliness until the preset air parameter requirements are met.

[0359] In summary, the method of this application can be tailored to different working conditions and air parameters, comprehensively taking into account indoor temperature, humidity and cleanliness, and reliably and stably ensuring indoor air quality.

[0360] It should be noted that in the description of this application, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more.

[0361] The various embodiments described in this specification are presented in a progressive manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0362] The above are merely a few embodiments of the present invention. Although the embodiments disclosed in the present invention are as described above, the content is only for the purpose of facilitating understanding of the present invention and is not intended to limit the present invention. Any person skilled in the art to which this invention pertains may make any modifications and changes in the form and details of the embodiments without departing from the spirit and scope disclosed in the present invention. However, the patent protection scope of the present invention shall still be determined by the scope defined in the appended claims.

Claims

1. An indoor air handling system, characterized in that, The indoor air handling system includes an outdoor unit, an indoor air handling unit, an indoor air delivery terminal, and an indoor radiant terminal. The indoor air handling unit includes a first heat exchanger and a second heat exchanger. The first heat exchanger includes a first refrigerant channel, and the second heat exchanger includes a second refrigerant channel. The first refrigerant channel and the second refrigerant channel can be connected to the refrigerant inlet and refrigerant outlet of the outdoor unit. The refrigerant output from the refrigerant outlet can be selectively distributed to the first refrigerant channel and / or the second refrigerant channel. The first heat exchanger also includes a water channel, in which water can exchange heat with refrigerant in the first refrigerant channel, and the water channel can be connected to the inlet and outlet of the indoor radiant terminal. The second heat exchanger also includes an air flow channel, through which air can exchange heat with the refrigerant in the second refrigerant flow channel. The indoor air handling unit includes an air inlet, an air outlet and a fan. Air flowing in from the air inlet can flow through the air flow channel under the drive of the fan and then flow out from the air outlet to the indoor air delivery terminal.

2. The indoor air treatment system as described in claim 1, characterized in that, The indoor air handling unit includes a refrigerant flow distribution component, which is used to distribute the refrigerant output from the refrigerant outlet between the first refrigerant flow channel and the second refrigerant flow channel.

3. The indoor air treatment system as described in claim 2, characterized in that, The indoor air handling system also includes an air quality detection device for detecting the temperature and / or humidity and / or cleanliness of the indoor air. The outdoor unit has only one compressor. The refrigerant flow distribution component can distribute the refrigerant output from the refrigerant outlet of the compressor between the first refrigerant flow channel and the second refrigerant flow channel based on the detected temperature and / or humidity and / or cleanliness of the indoor air.

4. The indoor air treatment system as described in claim 1, characterized in that, The indoor air handling system also includes a forced convection heat exchange terminal, and the water channel can be connected to the inlet and outlet of the forced convection heat exchange terminal.

5. The indoor air handling system as described in claim 4, characterized in that, The forced convection heat exchange terminal includes a fan coil unit and / or a cooling beam; The indoor radiant terminals include floor radiant terminals and / or ceiling radiant terminals; The indoor air delivery terminal includes an air duct.

6. The indoor air treatment system as described in claim 4, characterized in that, The forced convection heat exchange terminal includes a fan coil unit, the indoor radiant terminal includes a ground radiant terminal, and the indoor air delivery terminal includes a duct. The fan coil unit is installed in the active and / or quiet zones of the room, and the floor radiator terminal is installed in the active and quiet zones of the room. The air ducts are installed in the active and quiet areas of the room.

7. The indoor air treatment system as described in claim 4, characterized in that, The indoor radiant terminal includes a ceiling radiant terminal and a floor radiant terminal; the indoor air delivery terminal includes an air duct; the ceiling radiant terminal includes a capillary tube. The top surface radiating terminal, the ground radiating terminal, and the air duct are all located in the active and quiet zones of the room.

8. The indoor air handling system as described in claim 4, characterized in that, The indoor radiant terminal includes a ceiling radiant terminal, and the indoor air delivery terminal includes an air duct; The top surface radiating end includes a capillary; Both the top surface radiating terminal and the air duct are located in the active and quiet zones of the room.

9. The indoor air handling system as described in claim 1, characterized in that, The air inlet includes a fresh air inlet and a return air inlet. The fresh air inlet is used to connect to the outside to introduce outdoor air, and the return air inlet is used to connect to the inside to introduce indoor air into the indoor air handling unit. The fresh air inlet and the return air inlet can be opened simultaneously to mix the outdoor air and the indoor air in the indoor air handling unit.

10. The indoor air handling system as described in claim 9, characterized in that, The fresh air inlet and / or the return air inlet are equipped with a flow regulating device, which is used to adjust the mixing ratio of the outdoor air and the indoor air.

11. The indoor air handling system as described in claim 9, characterized in that, The fan includes a fresh air fan and a supply air fan, which can be turned on simultaneously. The fresh air fan is used to introduce outdoor air into the indoor air handling unit, and the supply air fan is used to deliver the mixed outdoor air and indoor air to the indoor air delivery terminal.

12. The indoor air treatment system as described in claim 3, characterized in that, The indoor air handling system also includes a damper that can regulate gas flow. The indoor air delivery terminal includes a duct, and the damper is installed on the duct. The damper can control the gas flow to the room based on the detected temperature and / or humidity and / or cleanliness of the indoor air.

13. The indoor air handling system as described in claim 12, characterized in that, The air ducts are multiple and lead to multiple indoor areas respectively; correspondingly, the air valves are multiple. The air quality detection device is multiple and is installed in multiple areas of the room; The air valve controls the gas flow rate to the area where the air quality detection device is located based on the temperature and / or humidity and / or cleanliness of the indoor air in that area.

14. The indoor air handling system as described in claim 1, characterized in that, The indoor air handling unit includes a separate main unit processing module and an air supply module. The host processing module has a first housing, the first heat exchanger and the second heat exchanger are disposed inside the first housing, and the air inlet is disposed on the first housing; The air supply module has a second housing, the fan is disposed inside the second housing, and the air outlet is disposed on the second housing; The first housing is also provided with an exhaust port, and the second housing is also provided with an air inlet. The exhaust port and the air inlet are connected by a pipeline.

15. The indoor air handling system as described in claim 14, characterized in that, The main unit processing module is at least partially located in the lower part of the ceiling, and the air supply module is entirely located in the upper part of the ceiling or partially located in the upper part of the ceiling.

16. The indoor air handling system as described in claim 14, characterized in that, The main processing module is installed against the wall and is horizontally positioned. The first heat exchanger and the second heat exchanger are arranged horizontally in the first housing.

17. The indoor air handling system as described in claim 16, characterized in that, The first housing has a lateral dimension in the transverse direction and a longitudinal dimension in the longitudinal direction, wherein the lateral dimension is greater than the longitudinal dimension.

18. The indoor air handling system as described in claim 16, characterized in that, The first refrigerant flow channel of the first heat exchanger has a first refrigerant inlet and a first refrigerant outlet. The second heat exchanger has a second refrigerant inlet and a second refrigerant outlet in its second refrigerant flow channel. The water channel has a water channel inlet and a water channel outlet. The air inlet includes a fresh air inlet and a return air inlet. Both the fresh air inlet and the exhaust outlet are located on the top wall of the first housing. The first refrigerant channel, the second refrigerant channel, and the water channel all penetrate the top wall of the first housing, or the first refrigerant channel, the second refrigerant channel, and the water channel are all located inside the first housing, and the refrigerant channel of the outdoor unit penetrates the top wall of the first housing. The return air vent is located on the side wall or bottom wall of the first housing.

19. The indoor air handling system as described in claim 16, characterized in that, The distance between the front sidewall of the first housing and the wall is 500 mm to 600 mm; The bottom wall of the first housing is 1.6 meters to 1.8 meters above the ground.

20. The indoor air handling system as described in claim 14, characterized in that, The host processing module further includes an air purification unit, which is disposed between the air inlet and the second heat exchanger and / or between the second heat exchanger and the air outlet. The air purification unit, the first heat exchanger, and the second heat exchanger are arranged horizontally in the first housing. The front sidewall of the first housing is removable or can be opened to remove the air purification unit.

21. The indoor air handling system as described in claim 20, characterized in that, The air inlet includes a fresh air inlet and a return air inlet. Along the direction of air flow, the air inlet, the first heat exchanger, the second heat exchanger, and the air purification unit are arranged in sequence.

22. The indoor air handling system as described in claim 14, characterized in that, The first heat exchanger is vertically positioned close to or adjacent to the rear or front sidewall of the first housing.

23. The indoor air handling system as described in claim 14, characterized in that, The air supply module includes a fan box and an air supply fan. The air supply fan is installed inside the fan box, and the rotation axis of the impeller of the air supply fan extends in the longitudinal direction.

24. The indoor air handling system as described in claim 23, characterized in that, The blower includes a first volute, a first impeller disposed within the first volute, a second volute, and a second impeller disposed within the second volute. The rotation axes of the first impeller and the second impeller are offset and both extend in the longitudinal direction. At least a portion of the front part of the first volute's enclosure and at least a portion of the rear part of the second volute's enclosure are the same plate, or at least a portion of the front part of the first volute's enclosure and at least a portion of the rear part of the second volute's enclosure are different plates that are close to each other.

25. The indoor air handling system as described in claim 23, characterized in that, The fan box is horizontally placed above the suspended ceiling. A first air inlet is provided on each of the two adjacent sides of the fan box. The fan box also includes a sealing plate. When one of the first air inlets is connected to the exhaust port through the pipeline, the sealing plate is used to block the other first air inlet.

26. The indoor air handling system as described in claim 18, characterized in that, The host processing module also includes a wet film humidifier disposed in the first housing. The wet film humidifier is connected to a purified water inflow pipe, through which purified water can flow into the wet film humidifier. The purified water inflow pipe passes through the top wall of the first housing. A solenoid valve is also disposed on the purified water inflow pipe, which is used to control the opening and closing of the purified water inflow pipe.

27. The indoor air handling system as described in claim 26, characterized in that, The host processing module also includes an air purification unit. The air inlet includes a fresh air inlet and a return air inlet. Along the direction of air flow, the air inlet, the first heat exchanger, the second heat exchanger, the wet film humidifier, and the air purification unit are arranged in sequence.

28. The indoor air handling system as described in claim 21, characterized in that, The host processing module further includes a first water receiving tray, which is located below the first heat exchanger and the second heat exchanger, and is used to receive the condensate from the first heat exchanger and the second heat exchanger. Alternatively, the host processing module further includes a first water receiving tray and a wet film humidifier, with the first water receiving tray located below the first heat exchanger, the second heat exchanger, and the wet film humidifier, and is used to receive the condensate from the first heat exchanger, the second heat exchanger, and the wet film humidifier.

29. The indoor air handling system as described in claim 28, characterized in that, The host processing module further includes a second water receiving tray, which is located below the first water receiving tray and the downward projection of the first water receiving tray falls entirely into the second water receiving tray. The first water receiving tray has a first drain pipe, and the second water receiving tray has a second drain pipe. The first drain pipe is inserted into the second drain pipe and is spaced apart from the outer wall of the first drain pipe and the inner wall of the second drain pipe.

30. A control method based on the indoor air treatment system according to any one of claims 1 to 29, characterized in that, The indoor air handling system includes an outdoor unit, an indoor air handling unit, an indoor air delivery terminal, and an indoor radiant terminal. The indoor air handling unit includes a first heat exchanger and a second heat exchanger. The first heat exchanger includes a first refrigerant channel, and the second heat exchanger includes a second refrigerant channel. The first and second refrigerant channels are connected to the refrigerant inlet and outlet of the outdoor unit. The refrigerant output from the refrigerant outlet can be selectively distributed to the first and / or second refrigerant channels. The first heat exchanger also includes a water channel, where water exchanges heat with the refrigerant in the first refrigerant channel. The water channel is connected to the inlet and outlet of the indoor radiant terminal. The second heat exchanger also includes an air channel, where air flowing through the air channel exchanges heat with the refrigerant in the second refrigerant channel. The indoor air handling unit includes an air inlet, an air outlet, and a fan. Air flowing in from the air inlet is driven by the fan to flow through the air duct and then flows out from the air outlet to the indoor air delivery terminal. The indoor air handling system also includes an air quality detection device for detecting indoor air parameters. The indoor air handling system also includes a damper for adjusting gas flow. The indoor air delivery terminal includes a duct, and the damper is installed on the duct. The air inlet includes a fresh air inlet and a return air inlet. The fresh air inlet is connected to the outside to introduce outdoor air, and the return air inlet is connected to the inside to introduce indoor air into the indoor air handling unit. The fresh air inlet and the return air inlet can be open simultaneously to mix the outdoor air and indoor air in the indoor air handling unit. The control method includes: Obtain the current indoor air parameters; If the current indoor air parameters do not meet the preset air parameters, control the refrigerant output from the refrigerant outlet to distribute it to the first refrigerant channel and the second refrigerant channel, and control the operation of the fan and / or the air valve. Monitor subsequent changes in the aforementioned indoor air parameters; Based on subsequent changes in the indoor air parameters, the refrigerant distributed to the first and second refrigerant channels is adjusted, and / or the operating status of the fan and / or the air valve is adjusted.

31. The control method for the indoor air handling system according to claim 30, characterized in that, The indoor air parameters include temperature, humidity, and cleanliness. The method is specifically as follows: When the temperature, humidity, and cleanliness do not meet the preset air parameters, the refrigerant output from the refrigerant outlet is simultaneously supplied to the first refrigerant channel and the second refrigerant channel, the fan is turned on, and the air valve is opened.

32. The control method for the indoor air handling system according to claim 31, characterized in that, The method further includes: When the temperature and humidity meet the preset air parameters but the cleanliness does not meet the preset air parameters, the refrigerant supply to the first refrigerant channel is reduced but not stopped, the refrigerant supply to the second refrigerant channel is reduced but not stopped, the fan speed is increased and / or the opening of the air valve is increased.

33. The control method for the indoor air handling system according to claim 31, characterized in that, The fan includes a fresh air fan and a supply air fan, which can be turned on simultaneously. The fresh air fan is used to introduce outdoor air into the indoor air handling unit, and the supply air fan is used to deliver the mixed outdoor air and indoor air into the indoor air delivery terminal. The method further includes: When the temperature, humidity, and cleanliness all meet the preset air parameters, the refrigerant supply to the first refrigerant channel is reduced or stopped, the refrigerant supply to the second refrigerant channel is reduced or stopped, the speed of the fresh air fan is reduced and the fresh air fan is kept in operation, the speed of the supply air fan is reduced and / or the opening of the air valve is reduced and the supply air fan and the air valve are kept in operation.

34. The control method for the indoor air handling system according to claim 31, characterized in that, The fan includes a fresh air fan and a supply air fan, which can be turned on simultaneously. The fresh air fan is used to introduce outdoor air into the indoor air handling unit, and the supply air fan is used to deliver the mixed outdoor air and indoor air into the indoor air delivery terminal. The method further includes: When the temperature and humidity do not meet the preset air parameters, but the cleanliness meets the preset air parameters, refrigerant continues to be supplied to the first refrigerant channel and the second refrigerant channel, the speed of the fresh air fan is reduced, and the speed of the supply air fan and / or the opening of the air valve are increased.

35. The control method for the indoor air handling system according to claim 31, characterized in that, The fan includes a fresh air fan and a supply air fan, which can be turned on simultaneously. The fresh air fan is used to introduce outdoor air into the indoor air handling unit, and the supply air fan is used to deliver the mixed outdoor air and indoor air into the indoor air delivery terminal. The method further includes: When the temperature and cleanliness do not meet the preset air parameters, but the humidity meets the preset air parameters, continue to supply refrigerant to the first refrigerant channel and the second refrigerant channel, increase the speed of the fresh air fan, increase the speed of the supply air fan and / or the opening of the air valve.

36. The control method for the indoor air handling system according to claim 31, characterized in that, The fan includes a fresh air fan and a supply air fan, which can be turned on simultaneously. The fresh air fan is used to introduce outdoor air into the indoor air handling unit, and the supply air fan is used to deliver the mixed outdoor air and indoor air into the indoor air delivery terminal. The method further includes: When the humidity and cleanliness both meet the preset air parameters but the temperature does not meet the preset air parameters, refrigerant continues to be supplied to the first refrigerant channel and the second refrigerant channel, the speed of the fresh air fan is reduced, and the speed of the supply air fan and / or the opening of the air valve are increased.

37. The control method for the indoor air handling system according to claim 31, characterized in that, The fan includes a fresh air fan and a supply air fan, which can be turned on simultaneously. The fresh air fan is used to introduce outdoor air into the indoor air handling unit, and the supply air fan is used to deliver the mixed outdoor air and indoor air into the indoor air delivery terminal. The method further includes: When the humidity and cleanliness do not meet the preset air parameters, but the temperature meets the preset air parameters, the refrigerant supplied to the first refrigerant channel and the second refrigerant channel is reduced but not stopped, the speed of the fresh air fan is increased, the speed of the supply air fan is increased, and / or the opening of the air valve is increased.

38. The control method for the indoor air handling system according to claim 31, characterized in that, The fan includes a fresh air fan and a supply air fan, which can be turned on simultaneously. The fresh air fan is used to introduce outdoor air into the indoor air handling unit, and the supply air fan is used to deliver the mixed outdoor air and indoor air into the indoor air delivery terminal. The method further includes: When the temperature and cleanliness both meet the preset air parameters, but the humidity does not meet the preset air parameters, the refrigerant supplied to the first refrigerant channel and the second refrigerant channel is reduced but not stopped, the speed of the fresh air fan is reduced and the fresh air fan is kept in operation, the speed of the supply air fan is reduced and / or the opening of the air valve is reduced and the supply air fan and the air valve are kept in operation.

Images