CN116026010A

CN116026010A - Air conditioning system, multi-split air conditioning floor heating system and control method of multi-split air conditioning floor heating system

Info

Publication number: CN116026010A
Application number: CN202211558178.9A
Authority: CN
Inventors: 王远鹏; 耿世超; 郭宁; 银松
Original assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Current assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Priority date: 2022-12-06
Filing date: 2022-12-06
Publication date: 2023-04-28

Abstract

The application provides an air conditioning system, a multi-split air conditioning floor heating system and a control method thereof, which solve the problems that indoor temperature is too low when indoor humidity is reduced and indoor temperature is also reduced in the dehumidifying process of an air conditioner under the conditions of high ambient humidity and low ambient temperature. The air conditioning system includes an outdoor unit, an indoor unit, and a controller. The indoor unit is connected with the outdoor unit through a refrigerant pipeline, and the operation modes of the indoor unit comprise a standby mode and a dehumidification mode. The operation period comprises m adjustment periods, wherein m is a positive integer; the time when the nth adjustment period starts is referred to as the nth time, n is a positive integer and 1.ltoreq.n.ltoreq.m. The controller is configured to determine an nth target operation mode of the indoor unit according to an nth humidity value at an nth time in the room and a target humidity range in the room, and to control the indoor unit to operate in the nth target operation mode in an nth adjustment period.

Description

Air conditioning system, multi-split air conditioning floor heating system and control method of multi-split air conditioning floor heating system

Technical Field

The application relates to the technical field of air conditioners, in particular to an air conditioning system, a multi-split air conditioning floor heating system and a control method thereof.

Background

The multi-split air conditioning system is a type of central air conditioner, commonly called as one-to-many, and refers to a primary refrigerant air conditioning system in which one outdoor unit is connected with two or more indoor units through pipes, an air cooling heat exchange mode is adopted on the outdoor side, and a direct evaporation heat exchange mode is adopted on the indoor side.

With the saturation of the multi-split air conditioner market, the floor heating market is continuously expanded, more and more users select a floor heating water system to heat, and the floor heating system has the advantages of high efficiency, energy conservation, good heat stability, low operation cost, long service life and the like, and meanwhile, the floor radiation heating is the most comfortable heating mode. Therefore, in many areas where central heating is impossible, more and more users use the multi-split air conditioning system and the floor heating system in parallel.

For the environment in which the environment humidity and the temperature need to be kept in the set range, when the environment humidity is higher than the set range, the environment dehumidification can be performed by opening the dehumidification mode of the air conditioner, but when the dehumidification mode of the air conditioner is opened, the indoor temperature can be reduced, so that the environment temperature is lower than the set range. Therefore, how to provide a multi-split system for automatically controlling the operation of the floor heating and indoor units in different rooms according to the ambient temperature and humidity, so that the temperature and humidity in each room are kept within the set ranges is a technical problem to be solved at present.

Disclosure of Invention

The application provides an air conditioning system, a multi-split air conditioning floor heating system and a control method thereof, which are used for solving the problems that the indoor temperature is too low when the indoor humidity is reduced and the indoor temperature is also reduced in the dehumidifying process of an air conditioner under the conditions of high ambient humidity and low ambient temperature.

An embodiment of the present application provides an air conditioning system, including: an outdoor unit, an indoor unit and a controller. The indoor unit is connected with the outdoor unit through a refrigerant pipeline.

The operation modes of the indoor unit include a standby mode and a dehumidification mode, and the indoor unit is operated in the standby mode or the dehumidification mode as a target operation mode in the operation period. The operation period comprises m adjustment periods, wherein m is a positive integer; the time when the nth adjustment period starts is referred to as the nth time, n is a positive integer and 1.ltoreq.n.ltoreq.m.

The controller is configured to: according to an nth humidity value at an nth time in the room and a target humidity range in the room, judging an nth target operation mode of the indoor unit, and controlling the indoor unit to operate in the nth target operation mode in an nth regulation period; the nth target operation mode of the indoor unit is a target operation mode of the indoor unit in the nth regulation period.

In some embodiments, the two extremes of the target humidity range are a first target humidity value and a second target humidity value. Wherein the first target humidity value is less than the second target humidity value. The controller is configured to: and judging an nth target operation mode of the indoor unit according to the nth humidity value, the first target humidity value and the second target humidity value.

When the difference value between the nth humidity value and the first target humidity value is smaller than zero, the nth target running mode of the indoor unit is a standby mode; when the difference value between the nth humidity value and the first target humidity value is greater than or equal to zero and the difference value between the nth humidity value and the second target humidity value is less than or equal to zero, the nth target running mode of the indoor unit is a standby mode; when the difference value between the nth humidity value and the first target humidity value is greater than or equal to zero, and the difference value between the nth humidity value and the second target humidity value is greater than zero, the nth target operation mode of the indoor unit is a dehumidification mode.

In some embodiments, the air conditioning system further comprises: and the controller acquires indoor humidity values through the humidity detection device. The humidity detection device is arranged corresponding to the indoor unit. The humidity detection device is arranged at the air return port of the indoor unit. The humidity detection device is used for detecting the indoor humidity value when the indoor unit is operated in the standby mode. When the indoor unit is operated in a dehumidification mode, the humidity detection device is used for detecting the return air humidity value of the indoor unit.

The embodiment of the application also provides a multi-split air conditioner floor heating system, which comprises: the air conditioning system and the floor heating system provided by any of the embodiments above. The floor heating system comprises: and the floor heating coil is arranged corresponding to the indoor unit. Wherein, the operating condition of ground heating coil includes: the floor heating coil is operated in an operation cycle with any one of the operating states of the floor heating coil as a target operating state.

The controller is further configured to: judging an nth target working state of the floor heating coil according to an nth temperature value at an nth time in the room and a target temperature range in the room, and controlling the floor heating coil to run in the nth target working state in an nth regulation period; the nth target working state of the floor heating coil is any one of the working states of the floor heating coil.

In some embodiments, the two extremes of the target temperature range are a first target temperature value and a second target temperature value. Wherein the first target temperature value is less than the second target temperature value. The controller is configured to: and judging the nth target working state of the floor heating coil according to the nth temperature value, the first target temperature value and the second target temperature value.

When the difference value between the nth temperature value and the first target temperature value is smaller than zero, the nth target working state of the floor heating coil is a heating state; when the difference value between the nth temperature value and the first target temperature value is greater than or equal to zero and the difference value between the nth temperature value and the second target temperature value is less than or equal to zero, the nth target working state of the floor heating coil is in a closed state or a heating state; when the difference value between the nth temperature value and the first target temperature value is greater than or equal to zero, and the difference value between the nth temperature value and the second target temperature value is greater than zero, the nth target working state of the floor heating coil is in a closed state.

In some embodiments, the multi-split air conditioning floor heating system further comprises: and the temperature detection device is electrically connected with the controller, and the controller acquires the indoor temperature value through the temperature detection device. Wherein, temperature detecting device and indoor set correspond setting.

In some embodiments, the temperature detecting device is disposed at a return air inlet of the indoor unit. When the indoor unit is operated in the standby mode, the temperature detection device is used for detecting the indoor humidity value. When the indoor unit is operated in the dehumidification mode, the temperature detection device is used for detecting the return air temperature value of the indoor unit.

In some embodiments, the multi-split air conditioning floor heating system further comprises: a humidification system. Wherein, the operating condition of humidification system includes: a closed state and a humidifying state, the humidifying system operates with any one of the operating states of the humidifying system as a target operating state in an operating period.

The controller is further configured to: judging an nth target working state of the humidifying system according to an nth humidity value at an nth time in the chamber and a target humidity range in the chamber, and controlling the humidifying system to operate in the nth target working state in an nth regulating period; the nth target working state of the humidifying system is any one of the working states of the humidifying system.

In some embodiments, the nth target operating state of the humidification system is a humidification state when the difference between the nth humidity value and the first target humidity value is less than zero. When the difference value between the nth humidity value and the first target humidity value is larger than or equal to zero, and the difference value between the nth humidity value and the second target humidity value is smaller than or equal to zero, the nth target working state of the humidifying system is in a closed state. When the difference value between the nth humidity value and the first target humidity value is greater than or equal to zero, and the difference value between the nth humidity value and the second target humidity value is greater than zero, the nth target working state of the humidification system is in a closed state.

The embodiment of the application also provides a control method of the multi-split air conditioner floor heating system, which is applied to the multi-split air conditioner floor heating system provided by any embodiment, wherein the multi-split air conditioner floor heating system comprises an air conditioning system and a floor heating system. The air conditioning system comprises an indoor unit, an outdoor unit and a controller, wherein the indoor unit is connected with the outdoor unit through a refrigerant pipeline, and the running mode of the indoor unit comprises a standby mode and a dehumidification mode; the floor heating system comprises a floor heating coil, and the working state of the floor heating coil comprises a closing state and a heating state.

The control method comprises the following steps: an nth humidity value and an nth temperature value at an nth time within the chamber are acquired. When the indoor unit is operated in a standby mode, the nth humidity value is an indoor humidity value, the nth temperature value is an indoor temperature value, and when the indoor unit is operated in a dehumidification mode, the nth humidity value is an indoor return air humidity value, and the nth temperature value is an indoor return air temperature value; the operation period comprises m adjustment periods, wherein m is a positive integer; the time when the nth adjustment period starts is referred to as the nth time, n is a positive integer and 1.ltoreq.n.ltoreq.m.

The controller judges an nth target operation mode of the indoor unit according to an nth humidity value at an nth time in the indoor unit and a target humidity range in the indoor unit, and controls the indoor unit to operate in the nth target operation mode in an nth regulation period; the nth target operation mode of the indoor unit is a standby mode or a dehumidification mode.

The controller judges the nth target working state of the floor heating coil according to the nth temperature value at the nth time in the room and the indoor target temperature range, and controls the floor heating coil to run in the nth target working state in the nth regulating period; the nth target working state of the floor heating coil is a closing state or a heating state.

In some embodiments, the multi-split air conditioner floor heating system further comprises a humidification system, and the working state of the humidification system comprises: a closed state and a humidified state. The control method further comprises the following steps:

the controller judges the nth target working state of the humidifying system according to the nth humidity value at the nth time in the chamber and the target humidity range in the chamber, and controls the humidifying system to operate in the nth target working state in the nth regulating period; the nth target working state of the humidifying system is a closing state or a humidifying state.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate and do not limit the invention.

Fig. 1 is a block diagram of an air conditioning system according to an embodiment of the present application;

FIG. 2 is a block diagram of an air conditioning system according to further embodiments;

fig. 3 is a control flow chart of an air conditioning system according to an embodiment of the present application;

fig. 4 is another control flow chart of an air conditioning system according to an embodiment of the present application;

fig. 5 is a block diagram of a multi-split air conditioner floor heating system provided in an embodiment of the present application;

fig. 6 is a control flow chart of a floor heating coil provided in an embodiment of the present application;

FIG. 7 is another control flow diagram of a floor heating coil provided in an embodiment of the present application;

fig. 8 is a control flow chart of a humidification system provided in an embodiment of the present application;

fig. 9 is another control flow diagram of the humidification system provided in an embodiment of the present application;

fig. 10 is a control flow chart of a multi-split air conditioner floor heating system provided in an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context. In addition, when describing a pipeline, the terms "connected" and "connected" as used herein have the meaning of conducting. The specific meaning is to be understood in conjunction with the context.

In the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

An embodiment of the present application provides an air conditioning system 10, as shown in fig. 1, including: an outdoor unit 1, an indoor unit 2, and a controller 3. The indoor unit 2 is connected to the outdoor unit 1 through a refrigerant line.

The operation modes of the indoor unit 2 include a standby mode and a dehumidification mode, and the indoor unit 2 is operated in the standby mode or the dehumidification mode as a target operation mode in an operation period. The operation period comprises m adjustment periods T, wherein m is a positive integer; the time at which the nth adjustment period Tn starts is referred to as nth time Tn, n being a positive integer and 1.ltoreq.n.ltoreq.m.

The controller 3 is configured to: according to An nth humidity value An at An nth time Tn in the room and a target humidity range A0 in the room, an nth target operation mode of the indoor unit 2 is judged, and the indoor unit 2 is controlled to operate in the nth target operation mode in An nth regulation period Tn; the nth target operation mode of the indoor unit 2 is a target operation mode of the indoor unit 2 in the nth adjustment period.

Illustratively, the air conditioning system 10 includes at least one indoor unit 2.

For example, the air conditioning system 10 includes one indoor unit 2, and the controller 3 controls the indoor unit 2 to operate in a target operation mode.

As another example, the air conditioning system 10 includes at least two indoor units 2, and the controller 3 controls each indoor unit 2 to operate in a target operation mode, respectively. The operation modes of any two indoor units 2 of the at least two indoor units 2 may be the same or different.

Illustratively, when the air conditioning system 10 includes a plurality of indoor units 2, each indoor unit 2 is connected to, for example, one of the line controllers 5, and the line controller 5 is also connected to the controller 3.

For example, one indoor unit 2 and one wire controller 5 are arranged in each room, the indoor units 2 in the same room are connected with the wire controller 5, and the indoor units 2 in one room can be controlled to operate in different operation modes through the wire controller 5 in the room, or target indoor temperature and/or humidity are set. Alternatively, the indoor unit 2 in the room is controlled to operate in different operation modes by the controller 3, or the target temperature and/or humidity in the room is set.

This is merely illustrative of one possible embodiment of the present application and is not meant to limit the specific embodiments of the present application.

In other embodiments, as shown in fig. 2, the air conditioning system includes a plurality of indoor units 2, each indoor unit 2 is electrically connected to one controller 3, and each controller 3 controls the indoor unit 2 connected thereto, i.e., the plurality of indoor units 2 need to be controlled by the plurality of controllers 3.

It can be appreciated that, with the connection method shown in fig. 1, when the air conditioning system 10 includes a plurality of indoor units 2, the controller 3 can control the operation of each indoor unit 2 separately, which is more beneficial to the centralized control of the plurality of indoor units in the air conditioning system, compared to the connection method shown in fig. 2.

The indoor unit 2 is continuously powered on, or the indoor unit 2 is intermittently powered on. When the indoor unit 2 is not electrified, the indoor unit 2 is in a closed state; the indoor unit 2 can be operated in the target operation mode while maintaining the power-on state. The time when the indoor unit 2 is kept in the powered-on state is referred to as an operation cycle of the indoor unit 2.

The run cycle includes a plurality of conditioning cyclesIn period T, the controller 3 obtains the indoor humidity value and calculates the indoor target humidity range A based on the indoor humidity value at the beginning of each regulation period T ₀ Judging whether the indoor humidity meets the preset dehumidification condition, and when the indoor humidity value meets the preset dehumidification condition, starting a dehumidification mode for dehumidifying the indoor by the indoor unit 2, so that the indoor humidity is reduced, and the indoor humidity is kept within a set range.

The preset dehumidification condition refers to an indoor condition in which the indoor humidity is high and dehumidification is required.

Illustratively, as shown in fig. 3, when the nth humidity value An is within the target humidity range A0, the nth target operation mode of the indoor unit 2 is the standby mode.

Illustratively, the controller 3 obtains a first humidity value A1 at a first time T1 at which the 1 st conditioning period T1 starts in the room, and determines A1 st target operation mode of the indoor unit 2 in the 1 st conditioning period T1 according to the first humidity value A1 and the target humidity range A0.

For example, when the 1 st humidity value A1 is within the target humidity range A0, at this time, the actual humidity in the room satisfies the target humidity in the room, and the indoor unit 2 is operated in the standby mode without dehumidifying the room.

Illustratively, the run period includes any two of the plurality of adjustment periods that are the same duration.

Illustratively, the run period includes at least two of the plurality of adjustment periods that are different in duration.

In some embodiments, as shown in fig. 4, the two extremes of the target humidity range A0 are a first target humidity value a01 and a second target humidity value a02. Wherein the first target humidity value a01 is smaller than the second target humidity value a02. The controller 3 is configured to: the nth target operation mode of the indoor unit 2 is determined based on the nth humidity value An and the first and second target humidity values a01 and a02.

When the difference between the nth humidity value An and the first target humidity value a01 is smaller than zero, the nth target operation mode of the indoor unit 2 is a standby mode; when the difference between the nth humidity value An and the first target humidity value a01 is greater than or equal to zero, and the difference between the nth humidity value An and the second target humidity value a02 is less than or equal to zero, the nth target operation mode of the indoor unit 2 is a standby mode; when the difference between the nth humidity value An and the first target humidity value a01 is greater than or equal to zero and the difference between the nth humidity value An and the second target humidity value a02 is greater than zero, the nth target operation mode of the indoor unit 2 is the dehumidification mode.

When the indoor humidity value is between the first target humidity value a01 and the second target humidity value a02, the indoor humidity is within the set range, that is, the indoor humidity satisfies the preset humidity condition. When the indoor humidity value is lower than the first target humidity value a01 or the indoor humidity value is higher than the second target humidity value a02, the indoor humidity does not satisfy the preset humidity condition. However, in the case where the preset humidity condition is not satisfied, the indoor unit 2 starts the dehumidification mode to dehumidify the room only when the indoor humidity value is higher than the second target humidity value a02, that is, when the indoor humidity is higher than the maximum value of the target humidity range.

In some embodiments, the air conditioning system 10 further comprises: and the humidity detection device is electrically connected with the controller 3, and the controller 3 acquires the indoor humidity value through the humidity detection device. Wherein the humidity detection device is arranged corresponding to the indoor unit 2. The humidity detection device is arranged at the return air inlet of the indoor unit 2. The humidity detection means is for detecting a humidity value in the room when the indoor unit 2 is operated in the standby mode. When the indoor unit 2 is operated in the dehumidification mode, the humidity detection device is used for detecting the return air humidity value of the indoor unit 2.

Illustratively, the humidity detection device includes, but is not limited to, a humidity sensor.

Illustratively, each indoor unit 2 is installed in one room, and correspondingly, one humidity detection device is provided in each room for detecting indoor humidity.

The indoor unit 2 is installed at the indoor top, for example. Since the hot air floats up and the cold air descends, there may be a case where humidity values of the respective positions in the room are not uniform. For example, the humidity value of the whole indoor unit is in accordance with the target humidity range, but the indoor humidity value obtained by the controller 3 is higher than the target humidity range, and at this time, the controller 3 determines and controls the indoor unit 2 to operate in the dehumidification mode although dehumidification of the indoor unit is not required. In this way, the controller 3 may not accurately determine the indoor actual humidity condition, and the indoor unit 2 may not stop.

The disadvantage of the indoor unit 2 not being stopped here is that when the indoor humidity value matches the target humidity range, the indoor unit 2 continues to operate in the dehumidification mode due to a deviation in the indoor humidity value acquired by the controller 3.

Through setting up humidity detection device in the return air inlet department of indoor set 2, when indoor set 2 for example with dehumidification mode operation, humidity detection device detects the return air humidity value of indoor set 2 to the realization is more accurate to indoor humidity's detection, and then realizes the more accurate judgement to indoor set 2 running mode, makes indoor set 2 can accurately realize dehumidification mode's operation and stop, better realization is to indoor humidity's control, makes indoor humidity keep in the settlement scope.

The embodiment of the application further provides a multi-split air conditioner floor heating system 100, as shown in fig. 5, including: the air conditioning system 10 and the floor heating system 20 provided in any of the above embodiments. The floor heating system 20 includes: the floor heating coil 4 is provided corresponding to the indoor unit 2. Wherein, the operating condition of ground heating coil 4 includes: the floor heating coil 4 is operated in an operation cycle with any one of the operation states of the floor heating coil 4 as a target operation state.

The controller 3 is further configured to: according to an nth temperature value Bn at an nth time Tn in the room and a target temperature range B0 in the room, judging an nth target working state of the floor heating coil 4, and controlling the floor heating coil 4 to operate in the nth target working state in an nth adjusting period Tn; the nth target operating state of the floor heating coil 4 is any one of the operating states of the floor heating coil 4.

It should be noted that, the operation mode of the air conditioning system 10 further includes a natural air supply mode, a heating mode, a cooling mode, and the like, and only a case where the air conditioning system 10 is operated in the standby mode or the dehumidification mode will be discussed in the embodiments of the present application.

Meanwhile, the indoor units and the floor heating coils are correspondingly arranged, the indoor units and the floor heating coils are arranged in each room, and the controller controls the start and stop of the floor heating coils and the indoor units in each room respectively. Because the controller is used for controlling the floor heating coil pipes and the indoor units in the rooms respectively, compared with a multi-split system in which the controller is arranged in each room for controlling the floor heating coil pipes and the indoor units in the room, the multi-split system has the advantages of being simple in operation and avoiding the increase of hardware cost.

Illustratively, the indoor units and floor heating coils of each room are controlled using the same wire controller, and the wire controllers are connected with the controller. The indoor units and the floor heating coils in each room can be controlled to start and stop through the in-room wire controller, and the indoor target temperature/humidity range is set; the controller can also control the start and stop of the indoor unit and the floor heating coil pipe in each room respectively, and set the indoor target temperature/humidity range.

The time that the multi-split air-conditioning floor heating system 100 operates is referred to as an operation cycle of the multi-split air-conditioning floor heating system 100, which includes a plurality of adjustment cycles. In the multi-split air conditioning floor heating system 100, the operation cycle of the air conditioning system 10 and the operation cycle of the floor heating coil 4 are the same cycle, and the adjustment cycle of the air conditioning system 10 and the adjustment cycle of the floor heating coil 4 are the same cycle.

Illustratively, the multi-split air conditioning floor heating system 100 includes a plurality of indoor units 2 and a plurality of floor heating coils 4. An indoor unit 2 and a floor heating coil 4 are arranged in each room, and the controller 3 controls the indoor unit 2 and the floor heating coil 4 in each room to work respectively. The operation modes of the indoor units 2 in different rooms can be the same or different, and the working states of the floor heating coils 4 in different rooms can be the same or different.

The multi-split air conditioning floor heating system 100 of the application is provided, wherein a control terminal is a controller 3, and the control terminal comprises, but is not limited to, an indoor unit 2 and a floor heating coil 4. The indoor unit 2 of the air conditioning system 10 is arranged at a high position of the indoor top, the floor heating coil 4 is arranged under the indoor floor, a heating pipeline is used for supplying hot water, and the hot water radiates heat to the indoor while flowing in the floor heating coil 4, so that the indoor heating temperature is raised. The controller 3, the indoor units 2 and the floor heating coil 4 form a floor water (floor heating coil 4) on-line scheme of the ceiling fluorine (indoor units 2) of the HAPQ, and the controller 3 can control the set temperature and start and stop of the indoor units 2 and the floor heating of each room.

Referring to fig. 5, the floor heating coil 4 and the indoor unit 2 in the same room are controlled by, for example, the same wire controller 5, the controller 3 is connected to the wire controller 5, and the controller 3 controls the floor heating coil 4 and the indoor unit 2 through the wire controller 5. Because the same wire controller 5 is used for controlling the indoor unit 2 and the floor heating coil 4, compared with the prior common multi-split system, the multi-split system has the advantages of simplicity in operation and avoidance of hardware cost increase. It should be noted that it is also within the scope of the present application to use the same wire controller 5 for the indoor units 2 and the floor heating coils 4 in different rooms.

Illustratively, as shown in fig. 6, when the nth temperature value Bn is within the target temperature range B0, the nth target operating state of the floor heating coil 4 is the off state.

In some embodiments, as shown in fig. 7, the two extremes of the target temperature range B0 are a first target temperature value B01 and a second target temperature value B02. Wherein the first target temperature value B01 is smaller than the second target temperature value B02. The controller 3 is configured to: and judging the nth target working state of the floor heating coil 4 according to the nth temperature value Bn, the first target temperature value B01 and the second target temperature value B02.

When the difference value between the nth temperature value Bn and the first target temperature value B01 is smaller than zero, the nth target working state of the floor heating coil 4 is a heating state; when the difference value between the nth temperature value Bn and the first target temperature value B01 is larger than or equal to zero and the difference value between the nth temperature value Bn and the second target temperature value B02 is smaller than or equal to zero, the nth target working state of the floor heating coil 4 is in a closed state or a heating state; when the difference value between the nth temperature value Bn and the first target temperature value B01 is greater than or equal to zero, and the difference value between the nth temperature value Bn and the second target temperature value B02 is greater than zero, the nth target working state of the floor heating coil 4 is a closed state.

When the indoor unit 2 is turned on to dehumidify in the dehumidification mode, the indoor temperature is reduced along with evaporation of indoor moisture, and the indoor temperature is possibly too low for the condition that the ambient temperature is not high, so that the indoor temperature is too low, and the indoor personnel feel uncomfortable.

In some embodiments of the present application, the controller 3 determines and adjusts the working mode of the indoor unit 2 according to the indoor humidity value and the target humidity range, and at the same time, the controller 3 determines and adjusts the working state of the floor heating coil 4 according to the indoor temperature value and the target temperature range. Because the indoor unit 2 is operated in the dehumidification mode, the indoor humidity is reduced while the dehumidification purpose is achieved. When the indoor temperature is lower than the set range, the floor heating coil 4 is operated in a heating state to heat the indoor, so that the indoor humidity is reduced and the indoor temperature is not reduced.

The indoor unit 2 is controlled to operate in different target operation modes according to the indoor humidity value and the target humidity range, and the floor heating coil 4 is controlled to operate in a target working state according to the indoor temperature value and the target humidity range; at this time, when the indoor humidity is within the target humidity range, the controller 3 controls the indoor unit 2 to operate in the standby mode; when the indoor temperature value is within the target temperature range, the controller 3 controls the floor heating coil 4 to operate in a heating state.

With such a design, the indoor temperature is monitored while the indoor dehumidification is performed, and when the indoor temperature is lower than the target temperature range (for example, the indoor temperature is lower than the minimum value of the target temperature range), the controller 3 controls the floor heating coil 4 to operate in the heating state, thereby realizing the effect of not lowering the indoor temperature while lowering the indoor humidity.

When the indoor temperature value is between the first target temperature value B01 and the second target temperature value B02, the indoor temperature is within the set range, that is, the indoor temperature satisfies the preset temperature condition. When the indoor temperature value is lower than the first target temperature value B01 or the indoor temperature value is higher than the second target temperature value B02, the indoor temperature does not satisfy the preset humidity condition. However, when the indoor temperature value is lower than the first target temperature value B01, that is, when the indoor temperature is lower than the minimum value of the target temperature range, the floor heating coil 4 works in a heating state so as to heat the indoor and raise the indoor temperature to be within the set range; when the indoor temperature value is higher than the second target temperature value B02, that is, when the indoor temperature is higher than the maximum value of the target temperature range, the floor heating coil 4 works in a closed state, so that the indoor heating is stopped, the problem that the indoor temperature is overhigh due to the fact that the indoor heating is still continued after the indoor temperature is higher than the set range is avoided, and therefore the indoor temperature can be kept within the set range.

In some embodiments, the multi-split air conditioning floor heating system 100 further includes: and a temperature detection device electrically connected with the controller 3, wherein the controller 3 obtains the indoor temperature value through the temperature detection device. Wherein the temperature detecting device is arranged corresponding to the indoor unit 2. The temperature detecting device is arranged at the return air inlet of the indoor unit 2. The temperature detecting means is for detecting a humidity value in the room when the indoor unit 2 is operated in the standby mode. When the indoor unit 2 is operated in the dehumidification mode, the temperature detection device is used for detecting the return air temperature value of the indoor unit 2.

Illustratively, the temperature sensing device includes, but is not limited to, a temperature sensor.

Illustratively, each floor heating coil 4 is installed in one room, and correspondingly, one temperature detecting device is provided in each room for detecting the indoor temperature.

The temperature detection device and the humidity detection device are arranged at the air return opening of the indoor unit 2, for example, and respectively detect the temperature value and the humidity value at the same position when the indoor unit 2 operates in a standby mode; when the indoor unit 2 is operated in the dehumidification mode, the temperature detection device and the humidity detection device detect the return air temperature and the return air humidity of the indoor unit 2, respectively.

In the multi-split air conditioner floor heating system 100 of some embodiments of the present application, in the operation period of the system, the sampling areas of indoor humidity and temperature are basically consistent, so that when the indoor unit 2 operates in a dehumidification mode, the temperature detection device can detect the indoor temperature more accurately, for example, when the indoor temperature drops below a first target temperature value, the controller 3 can acquire indoor temperature change in time, and control the floor heating coil 4 to work in a heating state, and heat the indoor, thereby ensuring that the indoor humidity and temperature can both be kept within a set range.

In some embodiments, as shown in fig. 8 and 9, the multi-split air conditioning floor heating system 100 further includes: a humidification system. Wherein, the operating condition of humidification system includes: a closed state and a humidifying state, the humidifying system operates with any one of the operating states of the humidifying system as a target operating state in an operating period.

The controller 3 is further configured to: judging an nth target working state of the humidifying system according to an nth humidity value at an nth time in the chamber and a target humidity range in the chamber, and controlling the humidifying system to operate in the nth target working state in an nth regulating period; the nth target working state of the humidifying system is any one of the working states of the humidifying system.

It should be noted that, the time when the multi-split air-conditioning floor heating system 100 operates is referred to as an operation period of the multi-split air-conditioning floor heating system 100, and the operation period includes a plurality of adjustment periods. In the multi-split air conditioning floor heating system 100, the operation cycle of the air conditioning system 10, the operation cycle of the floor heating coil 4, and the operation cycle of the humidification system are the same, and the adjustment cycle of the air conditioning system 10, the adjustment cycle of the floor heating coil 4, and the adjustment cycle of the humidification system are the same.

Illustratively, the multi-split air conditioning floor heating system 100 includes a plurality of indoor units 2, a plurality of floor heating coils 4, and a plurality of humidification systems.

For example, an indoor unit 2, a floor heating coil 4 and a humidification system are provided in each room, and the controller 3 controls the operation of the indoor unit 2, the floor heating coil 4 and the humidification system in each room, respectively. The operation modes of the indoor units 2 in different rooms may be the same or different, the operation states of the floor heating coils 4 in different rooms may be the same or different, and the operation states of the humidification systems in different rooms may be the same or different.

Referring to fig. 5, the floor heating coil 4, the indoor unit 2 and the humidification system in the same room are controlled by, for example, the same wire controller 5, the controller 3 is connected with the wire controller 5, and the controller 3 controls the floor heating coil 4, the indoor unit 2 and the humidification system through the wire controller 5. Because the same wire controller 5 is used for controlling the floor heating coil 4, the indoor unit 2 and the humidifying system, compared with the prior common multi-split system, the multi-split system has the advantages of simplicity in operation and avoidance of hardware cost increase. It should be noted that it is also within the scope of the present application to use the same wire controller 5 for the floor heating coils 4, the indoor units 2 and the humidification system in different rooms.

Illustratively, the humidification system includes a humidifier.

Illustratively, as shown in fig. 8, when the difference between the nth humidity value and the target humidity range is less than zero, the nth target operating state of the humidification system is a humidified state. When the difference value between the nth humidity value and the target humidity range is greater than or equal to zero, the nth target working state of the humidifying system is a closing state.

For a situation where the indoor temperature is high but the humidity is low, for example, when the indoor temperature is higher than the maximum value of the indoor target temperature range but the indoor humidity is lower than the minimum value of the indoor target humidity range, the indoor environment is dry and the human body in the room feels uncomfortable, so that a humidifying system needs to be arranged to humidify the room.

The controller 3 judges the target operation mode of the indoor unit 2 and the target operation state of the humidification system according to the indoor humidity value and the target humidity range. When the indoor humidity value is within the target humidity range, the indoor is not required to be humidified or dehumidified, and when the indoor humidity value is higher than the maximum value of the target humidity range, the controller 3 controls the indoor unit 2 to operate in a dehumidification mode to dehumidify the indoor; when the indoor humidity value is lower than the minimum value of the target humidity range, the controller 3 controls the humidification system to operate in a humidified state to humidify the indoor.

In some embodiments, as shown in fig. 9, the nth target operating state of the humidification system is a humidification state when the difference between the nth humidity value and the first target humidity value is less than zero. When the difference value between the nth humidity value and the first target humidity value is larger than or equal to zero, and the difference value between the nth humidity value and the second target humidity value is smaller than or equal to zero, the nth target working state of the humidifying system is in a closed state. When the difference value between the nth humidity value and the first target humidity value is greater than or equal to zero, and the difference value between the nth humidity value and the second target humidity value is greater than zero, the nth target working state of the humidification system is in a closed state.

In the multi-split air conditioner floor heating system 100 of the present application, as shown in fig. 10, the controller 3 determines and controls the indoor unit 2 to operate in a target operation mode according to the obtained indoor humidity value and the target humidity value (for example, the first target humidity value and/or the second target humidity value); meanwhile, the controller 3 judges and controls the humidifying system to work in a target working state according to the acquired indoor humidity value and a target humidity value (for example, a first target humidity value and/or a second target humidity value); meanwhile, the controller 3 judges and controls the floor heating coil 4 to work in a target working state according to the acquired indoor temperature value and a target temperature value (for example, a first temperature value and/or a second temperature value).

When the indoor humidity is higher than the set range (the indoor humidity value is higher than the first target humidity value and the second target humidity value), the controller 3 controls the indoor unit 2 to operate in the dehumidification mode to dehumidify the room.

When the indoor humidity is lower than the set range (the indoor humidity value is lower than the first target humidity value and the second target humidity value), the controller 3 controls the humidification system to operate in a humidified state to humidify the indoor.

When the indoor temperature is lower than the set range (the indoor temperature value is higher than the first target temperature value and the second target temperature value), the controller 3 controls the floor heating coil 4 to operate in a heating state, heats the indoor, and increases the indoor temperature to be within the target range.

When the indoor temperature is higher than the set range (the indoor temperature value is lower than the first target temperature value and the second target temperature value), the controller 3 controls the floor heating coil 4 to operate in the off state, that is, the floor heating coil 4 is not heated, and it is understood that when the floor heating coil 4 is in the stop heating state, the indoor temperature is not affected by the floor heating coil 4 and gradually decreases.

When the indoor temperature is in the set range (the indoor temperature value is higher than the first target temperature value and lower than the second target temperature value), the indoor temperature is suitable, and at this time, the controller 3 controls the floor heating coil 4 to keep the working state in the last regulation period. For example, during a first conditioning cycle, the indoor temperature is below the set range, and the floor heating coil 4 is operating in a heated state; in the second adjusting period, the indoor temperature is in a set range, and the floor heating coil 4 keeps working in a heating state; in the third adjusting period, the indoor temperature is in a set range, and the floor heating coil 4 keeps working in a heating state; in the fourth conditioning cycle, the indoor temperature is higher than the set range and the floor heating coil 4 is operated in the off state.

The multi-split air conditioner floor heating system 100 provided by some embodiments of the present application is suitable for an environment with higher humidity but lower temperature. For example, in the southern China, 3 to 4 months of the southern returning days, the air humidity is close to saturation, the ambient humidity is high, but the temperature is not high; or, in a dark and moist basement environment, sunlight cannot be incident to cause lower indoor temperature and poor ventilation, so that the indoor humidity is higher; or the indoor environment and the stored articles are prevented from being mildewed by being unattended for a long time, but the humidity requirement is high, such as archives, storage warehouses and the like, and the humidity is required to be ensured to be within a set range.

According to the multi-split air conditioner floor heating system 100 provided by some embodiments of the present application, the controller 3 may set a target humidity value (for example, a first target humidity value and/or a second target humidity value) and a target temperature value (for example, a first target temperature value and/or a second target temperature value) of each room respectively, control the operation of the multi-split indoor unit 2 through the indoor humidity value and the indoor target humidity value, and control the operation of the floor heating coil 4 through the indoor temperature value and the indoor target temperature value, where the indoor unit 2 and the floor heating coil 4 may operate simultaneously or operate independently. When the indoor humidity value is detected to be larger than the set range, the indoor unit 2 starts a dehumidification mode to dehumidify; when the indoor temperature is detected to be lower than the set range, the floor heating coil 4 is started to work in a heating state to supply heat, so that the aim of indoor cooling and dehumidifying is fulfilled.

According to the multi-split air conditioner floor heating system 100 provided by some embodiments of the application, according to the set target humidity value and target temperature value, through linkage of the indoor unit 2 and the floor heating coil 4, starting and stopping of the indoor unit 2 and the floor heating coil 4 are automatically controlled, heating of the floor heating coil 4 (the floor heating coil 4 works in a heating state) and cooling of the indoor unit 2 (the indoor unit 2 works in a dehumidification mode) can be simultaneously operated, and the indoor unit can be started and stopped according to the monitoring values of the temperature and humidity sensors respectively, so that indoor humidity and temperature are kept in a set range, and the purpose of cooling and dehumidification is achieved.

The embodiment of the application also provides a control method of the multi-split air-conditioning floor heating system, which is applied to the multi-split air-conditioning floor heating system 100 provided in any embodiment. As shown in fig. 5 and 10, the multi-split air conditioning floor heating system 100 includes an air conditioning system 10 and a floor heating system, and the air conditioning system 10 includes an indoor unit 2, an outdoor unit 1, and a controller 3. The indoor unit 2 is connected to the outdoor unit 1 through a refrigerant pipe, and the operation modes of the indoor unit 2 include a standby mode and a dehumidification mode. The floor heating system 20 includes a floor heating coil 4, and the operating states of the floor heating coil 4 include an off state and a heating state. The control method of the multi-split air conditioner floor heating system comprises the following steps:

S1, acquiring an nth humidity value and an nth temperature value at an nth time in the room. When the indoor unit 2 is operated in the standby mode, the nth humidity value is an indoor humidity value, the nth temperature value is an indoor temperature value, and when the indoor unit 2 is operated in the dehumidification mode, the nth humidity value is a return air humidity value of the indoor unit 2, and the nth temperature value is a return air temperature value of the indoor unit 2; the operation period comprises m adjustment periods, wherein m is a positive integer; the time when the nth adjustment period starts is referred to as the nth time, n is a positive integer and 1.ltoreq.n.ltoreq.m.

S2, judging an nth target operation mode of the indoor unit 2 according to an nth humidity value at an nth time in the room and a target humidity range in the room, and controlling the indoor unit 2 to operate in the nth target operation mode in an nth regulation period.

S3, judging the nth target working state of the floor heating coil 4 according to the nth temperature value at the nth time in the room and the indoor target temperature range, and controlling the floor heating coil 4 to operate in the nth target working state in the nth adjusting period.

Note that the sequence of step S2 and step S3 is not limited. In some examples, step S2 is first performed, and step S3 is further performed. In other examples, step S3 is first performed, and step S2 is further performed.

In some embodiments, the multi-split air conditioning floor heating system 100 further includes a humidification system, where the operating states of the humidification system include: a closed state and a humidified state. As shown in fig. 10, the control method of the multi-split air conditioner floor heating system 100 further includes:

s4, the controller 3 judges an nth target working state of the humidifying system according to an nth humidity value at an nth time in the room and a target humidity range in the room, and controls the humidifying system to operate in the nth target working state in an nth regulating period; the nth target working state of the humidifying system is a closing state or a humidifying state.

It should be noted that the sequence of the step S2, the step S3, and the step S4 is not limited.

Illustratively, step S2 and step S4 are performed, for example, simultaneously.

In some examples, steps S2 and S4 are first performed, followed by step S3. In other examples, step S3 is first performed, and then steps S2 and S4 are performed.

In summary, according to the control method of the multi-split air conditioner floor heating system of the present application, the controller 3 may set the target humidity value (for example, the first target humidity value and/or the second target humidity value) and the target temperature value (for example, the first target temperature value and/or the second target temperature value) of each room respectively, control the operation of the multi-split indoor unit 2 through the indoor humidity value and the indoor target humidity value, and control the operation of the floor heating coil 4 through the indoor temperature value and the indoor target temperature value, where the indoor unit 2 and the floor heating coil 4 may operate simultaneously or operate separately. When the indoor humidity value is detected to be larger than the set range, the indoor unit 2 starts a dehumidification mode to dehumidify; when the indoor temperature is detected to be lower than the set range, the floor heating coil 4 is started to work in a heating state to supply heat, so that the aim of indoor cooling and dehumidifying is fulfilled.

For environments with higher humidity but lower temperatures. For example, in the southern China, 3 to 4 months of the southern returning days, the air humidity is close to saturation, the ambient humidity is high, but the temperature is not high; or, in a dark and moist basement environment, sunlight cannot be incident to cause lower indoor temperature and poor ventilation, so that the indoor humidity is higher; or the indoor environment and the stored articles are prevented from being mildewed by being unattended for a long time, but the humidity requirement is high, such as archives, storage warehouses and the like, and the humidity is required to be ensured to be within a set range.

According to the control method of the multi-split air conditioner floor heating system, provided by some embodiments of the application, according to the set target humidity value and target temperature value, the indoor unit 2 and the floor heating coil 4 are automatically controlled to start and stop through linkage, heating (the floor heating coil 4 works in a heating state) of the floor heating coil 4 and dehumidifying (the indoor unit 2 works in a dehumidifying mode) of the indoor unit 2 can be operated simultaneously, and the indoor unit can be started and stopped respectively according to the detection values of the temperature sensor and the humidity sensor, so that indoor humidity and indoor temperature can be kept within a set range, and the aim of not cooling and dehumidifying is fulfilled.

The foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An air conditioning system, comprising:

an outdoor unit;

the indoor unit is connected with the outdoor unit through a refrigerant pipeline, the operation mode of the indoor unit comprises a standby mode and a dehumidification mode, and the indoor unit operates in the operation period by taking the standby mode or the dehumidification mode as a target operation mode; the operation period comprises m adjustment periods, wherein m is a positive integer; the time when the nth regulating period starts is called nth time, n is a positive integer and is more than or equal to 1 and less than or equal to m;

a controller configured to:

judging an nth target operation mode of the indoor unit according to an nth humidity value of the indoor at the nth time and a target humidity range of the indoor, and controlling the indoor unit to operate in the nth target operation mode in an nth regulation period; the nth target operation mode of the indoor unit is the target operation mode of the indoor unit in the nth regulation period.

2. An air conditioning system according to claim 1, wherein,

the two extreme values of the target humidity range are a first target humidity value and a second target humidity value; wherein the first target humidity value is less than the second target humidity value;

The controller is configured to:

judging the nth target operation mode of the indoor unit according to the nth humidity value, the first target humidity value and the second target humidity value; wherein, the liquid crystal display device comprises a liquid crystal display device,

when the difference value between the nth humidity value and the first target humidity value is smaller than zero, the nth target operation mode of the indoor unit is the standby mode;

when the difference between the nth humidity value and the first target humidity value is greater than or equal to zero, and the difference between the nth humidity value and the second target humidity value is less than or equal to zero, the nth target operation mode of the indoor unit is the standby mode;

when the difference between the nth humidity value and the first target humidity value is greater than or equal to zero, and the difference between the nth humidity value and the second target humidity value is greater than zero, the nth target operation mode of the indoor unit is the dehumidification mode.

3. The air conditioning system according to claim 1 or 2, further comprising:

the humidity detection device is electrically connected with the controller, and the controller obtains the indoor humidity value through the humidity detection device; wherein the humidity detection device is arranged corresponding to the indoor unit;

The humidity detection device is arranged at the air return port of the indoor unit; wherein, the liquid crystal display device comprises a liquid crystal display device,

when the indoor unit is operated in the standby mode, the humidity detection device is used for detecting the indoor humidity value;

when the indoor unit is operated in the dehumidification mode, the humidity detection device is used for detecting the return air humidity value of the indoor unit.

4. Many online air conditioner ground warms up system, its characterized in that includes:

an air conditioning system according to any one of claims 1 to 3;

ground heating system includes: the floor heating coil pipe is arranged corresponding to the indoor unit; wherein, the operating condition of ground warm coil pipe includes: a closed state and a heating state, wherein the floor heating coil is operated in the operation period by taking any one of the working states of the floor heating coil as a target working state;

the controller is further configured to:

judging an nth target working state of the floor heating coil according to an nth temperature value of the room at the nth time and a target temperature range of the room, and controlling the floor heating coil to run in the nth target working state in the nth regulating period; the nth target working state of the floor heating coil is any one of the working states of the floor heating coil.

5. The multi-split air-conditioning floor heating system of claim 4, wherein,

the two extreme values of the target temperature range are a first target temperature value and a second target temperature value; wherein the first target temperature value is less than the second target temperature value;

the controller is configured to:

judging the nth target working state of the floor heating coil according to the nth temperature value, the first target temperature value and the second target temperature value; wherein, the liquid crystal display device comprises a liquid crystal display device,

when the difference value between the nth temperature value and the first target temperature value is smaller than zero, the nth target working state of the floor heating coil is the heating state;

when the difference value between the nth temperature value and the first target temperature value is greater than or equal to zero and the difference value between the nth temperature value and the second target temperature value is less than or equal to zero, the nth target working state of the floor heating coil is the closed state or the heating state;

when the difference value between the nth temperature value and the first target temperature value is greater than or equal to zero, and the difference value between the nth temperature value and the second target temperature value is greater than zero, the nth target working state of the floor heating coil is the closed state.

6. The multi-split air-conditioning floor heating system of claim 5, further comprising:

the temperature detection device is electrically connected with the controller, and the controller obtains the indoor temperature value through the temperature detection device; wherein the temperature detection device is arranged corresponding to the indoor unit;

the temperature detection device is arranged at a return air inlet of the indoor unit;

when the indoor unit is operated in the standby mode, the temperature detection device is used for detecting the indoor humidity value;

when the indoor unit is operated in the dehumidification mode, the temperature detection device is used for detecting the return air temperature value of the indoor unit.

7. The multi-split air-conditioning floor heating system according to any one of claims 4 to 6, further comprising:

a humidification system; wherein, the operating condition of humidification system includes: a closed state and a humidifying state, the humidifying system operating with any one of the operating states of the humidifying system as a target operating state within the operating period;

the controller is further configured to:

According to an nth humidity value of the room at the nth time and a target humidity range of the room, judging an nth target working state of the humidifying system, and controlling the humidifying system to operate in the nth target working state in the nth regulating period; wherein the nth target operating state of the humidification system is any one of the operating states of the humidification system.

8. The multi-split air-conditioning floor heating system of claim 7, wherein,

when the difference value between the nth humidity value and the first target humidity value is smaller than zero, the nth target working state of the humidifying system is the humidifying state;

when the difference value between the nth humidity value and the first target humidity value is greater than or equal to zero, and the difference value between the nth humidity value and the second target humidity value is less than or equal to zero, the nth target working state of the humidifying system is the closed state;

when the difference between the nth humidity value and the first target humidity value is greater than or equal to zero, and the difference between the nth humidity value and the second target humidity value is greater than zero, the nth target working state of the humidifying system is the closing state.

9. A control method of a multi-split air-conditioning floor heating system, which is applied to the multi-split air-conditioning floor heating system according to any one of claims 4 to 8, and is characterized in that the multi-split air-conditioning floor heating system comprises an air-conditioning system and a floor heating system; the air conditioning system comprises an indoor unit, an outdoor unit and a controller; the indoor unit is connected with the outdoor unit through a refrigerant pipeline, and the operation mode of the indoor unit comprises a standby mode and a dehumidification mode; the floor heating system comprises a floor heating coil, and the working state of the floor heating coil comprises a closing state and a heating state; the control method comprises the following steps:

acquiring an nth humidity value and the nth temperature value at an nth time in the room; when the indoor unit is operated in the standby mode, the nth humidity value is the indoor humidity value, the nth temperature value is the indoor temperature value, and when the indoor unit is operated in the dehumidification mode, the nth humidity value is the indoor return air humidity value, and the nth temperature value is the indoor return air temperature value; the operation period comprises m adjustment periods, wherein m is a positive integer; the time when the nth regulating period starts is called nth time, n is a positive integer and is more than or equal to 1 and less than or equal to m;

The controller judges an nth target operation mode of the indoor unit according to the nth humidity value and the indoor target humidity range, and controls the indoor unit to operate in the nth target operation mode in the nth regulation period; the nth target operation mode of the indoor unit is the standby mode or the dehumidification mode;

the controller judges an nth target working state of the floor heating coil according to the nth temperature value and the indoor target temperature range, and controls the floor heating coil to run in the nth target working state in the nth regulating period; the nth target working state of the floor heating coil is the closing state or the heating state.

10. The control method of the multi-split air-conditioning floor heating system according to claim 9, wherein the multi-split air-conditioning floor heating system further comprises a humidifying system, and the operating state of the humidifying system comprises: a closed state and a humidified state; the control method further includes:

the controller judges an nth target working state of the humidifying system according to an nth humidity value of the room at the nth time and a target humidity range of the room, and controls the humidifying system to operate in the nth target working state in the nth regulating period; the n target working state of the humidifying system is the closing state or the humidifying state.