CN111578481B - Dehumidification control method of temperature and humidity independent control air conditioning system - Google Patents

Abstract

The invention relates to the technical field of air conditioning, in particular to a dehumidification control method for an air conditioning system that independently controls temperature and humidity. The present invention aims to solve the problem of low accuracy in determining the regeneration timing of the adsorbent. To this end, the dehumidification control method of the present invention includes: when the dehumidification unit operates in the dehumidification mode, judging whether the solid adsorption component satisfies the regeneration condition; when the regeneration condition is met, controlling the dehumidification unit to operate the regeneration mode; the regeneration condition includes the following conditions. At least one: the indoor ambient humidity is greater than or equal to the first humidity threshold and the difference between the indoor ambient humidity and the humidity of the solid adsorption component is less than the first preset difference; the indoor ambient humidity is greater than or equal to the first humidity threshold and the indoor ambient humidity decreases The rate is less than the rate threshold. The dehumidification control method of the present application can improve the accuracy of determining the regeneration timing of the solid adsorption component, achieve a balance between the dehumidification effect and the regeneration effect, and improve the dehumidification efficiency of the air conditioning system.

Description

Dehumidification control method of temperature and humidity independent control air conditioning system

technical field

The invention relates to the technical field of air conditioning, in particular to a dehumidification control method for an air conditioning system that independently controls temperature and humidity.

Background technique

The air-conditioning system with independent temperature and humidity control can control the indoor temperature and indoor humidity separately, thereby avoiding the problems of obvious cooling and high energy consumption in the dehumidification process in the existing technical solutions using refrigeration and dehumidification.

In the existing air-conditioning system with independent temperature and humidity control, indoor dehumidification is usually realized by solution dehumidification. Solution dehumidification realizes dehumidification by adsorbing moisture in the air during the process of indoor air flowing through the hygroscopic solution, and realizes the regeneration of the hygroscopic solution by heating when the hygroscopic solution is diluted. However, in the actual application process, the hygroscopic solution generally adopts timing regeneration, that is, the hygroscopic solution starts heating regeneration after running for a certain period of time. Due to the fixed regeneration timing, this regeneration method may easily lead to the timing of entering the regeneration mode too early or too late. Or entering the regeneration mode too late will easily lead to insufficient or excessive regeneration of the hygroscopic solution, which will seriously affect the dehumidification efficiency of the air conditioning system. That is to say, the existing air-conditioning system with independent temperature and humidity control has the problem that the judgment accuracy of the regeneration timing of the adsorbent is low, which affects the dehumidification efficiency.

Accordingly, there is a need in the art for a new dehumidification control method for an air conditioning system that independently controls temperature and humidity to solve the above problems.

SUMMARY OF THE INVENTION

In order to solve at least one of the above problems in the prior art, that is, in order to solve the problem of low accuracy in determining the regeneration timing of the adsorbent, the present invention provides a dehumidification control method for an air-conditioning system that independently controls temperature and humidity. The air-conditioning system includes: replacing a heat unit, the heat exchange unit includes a compressor connected by a refrigerant pipe, an outdoor heat exchanger, a first throttling element and an indoor heat exchanger, the outdoor heat exchanger is configured with an outdoor fan, and the indoor heat exchanger Equipped with an internal fan and a dehumidification unit, the dehumidification unit includes a dehumidification box, a solid adsorption component and a reduction component, and the dehumidification box is provided with openable and closable dehumidification air inlets, dehumidification air outlets, reduction air inlets and reduction outlets. The dehumidification air inlet or the dehumidification air outlet is provided with a dehumidification fan, the reduction air inlet or the reduction air outlet is provided with a reduction fan, and the solid adsorption component is fixed in the dehumidification box Inside, the reduction component includes a reduction coil, the reduction coil is partially coiled on the solid adsorption component, and the reduction coil allows the heat exchange medium to flow through,

The dehumidification control method includes:

When the dehumidification unit operates in the dehumidification mode, determine whether the solid adsorption component satisfies the regeneration condition;

When the regeneration condition is met, controlling the dehumidification unit to operate a regeneration mode;

Wherein, when the dehumidification unit operates in a dehumidification mode, the dehumidification air inlet and the dehumidification air outlet are opened, and the dehumidification fan operates;

Wherein, the regeneration conditions include at least one of the following conditions:

The indoor environmental humidity is greater than or equal to a first humidity threshold, and the difference between the indoor environmental humidity and the humidity of the solid adsorption component is less than a first preset difference;

The indoor ambient humidity is greater than or equal to the first humidity threshold and the rate of decrease of the indoor ambient humidity is less than the rate threshold.

In the preferred technical solution of the above-mentioned dehumidification control method for an air-conditioning system with independent temperature and humidity control, the step of "controlling the dehumidification unit to operate the regeneration mode when the regeneration condition is satisfied" further includes:

When the regeneration condition is met, acquiring the operation mode of the heat exchange unit;

judging whether the heat exchange unit operates in a cooling mode;

Based on the judgment result, the dehumidification unit is controlled to operate the regeneration mode.

In the preferred technical solution of the above-mentioned dehumidification control method for an air-conditioning system with independent temperature and humidity control, both ends of the reduction coil are respectively connected to the exhaust port of the compressor and the inlet of the outdoor heat exchanger, and the compression The exhaust port of the machine is provided with a first electric control valve, and the reduction coil is provided with a second electric control valve. The step of "controlling the dehumidification unit to operate the regeneration mode based on the judgment result" further includes:

When the heat exchange unit operates in the cooling mode, the reduction air inlet and the reduction air outlet are controlled to open, the dehumidification air inlet and the dehumidification air outlet are closed, the reduction fan is controlled to be turned on, and the dehumidification fan is controlled to be turned on. The fan is turned off, the second electronically controlled valve is controlled to be opened, and the first electronically controlled valve is controlled to be closed.

In the preferred technical solution of the above-mentioned dehumidification control method for an air-conditioning system with independent temperature and humidity control, the exhaust port of the compressor is provided with a first electronically controlled valve, and the reduction component further includes: a reduction water tank, and the reduction water tank is stored in the reduction water tank. There is heat exchange liquid, the first end and the second end of the reduction coil are respectively communicated with the reduction water tank, and a circulating pump is arranged on the reduction coil; heat exchange coil: the heat exchange coil is partially coiled Set in the reductive water tank, the first end of the heat exchange coil is communicated with the exhaust port of the compressor, and the second end is communicated with the inlet of the outdoor heat exchanger; the second electronically controlled valve, the The second electric control valve is arranged on the heat exchange coil and is located between the first end of the heat exchange coil and the reduction water tank; the second throttle element is arranged on the on the heat exchange coil and between the reduction water tank and the second end of the heat exchange coil; the step of "controlling the dehumidification unit to operate the regeneration mode based on the judgment result" further includes:

When the heat exchange unit operates in the cooling mode, the reduction air inlet and the reduction air outlet are controlled to open, the dehumidification air inlet and the dehumidification air outlet are closed, and the reduction fan and the circulation pump are controlled The dehumidification fan is turned on, the dehumidification fan is turned off, the second electric control valve is controlled to open, the first electric control valve is closed, and the second throttling element is fully opened.

In the preferred technical solution of the above-mentioned dehumidification control method for an air-conditioning system with independent temperature and humidity control, the step of "controlling the dehumidification unit to operate the regeneration mode based on the judgment result" further includes:

When the heat exchange unit is not operating in the cooling mode, the reduction air inlet and the reduction air outlet are controlled to open, the dehumidification air inlet and the dehumidification air outlet are closed, and the compressor, the external The fan, the reduction fan and the circulation pump are turned on, the dehumidification fan is turned off, the second electric control valve is controlled to open, the first electric control valve is closed, the first throttle element is fully opened, and the The second throttle element is opened to the set opening degree.

In the preferred technical solution of the above-mentioned dehumidification control method for an air-conditioning system with independent temperature and humidity control, the dehumidification control method further includes:

When the dehumidification unit operates in the regeneration mode, determine whether the dehumidification unit satisfies the exit condition;

When the exit condition is satisfied, the dehumidification unit is controlled to exit the regeneration mode and continue to operate the dehumidification mode.

In the preferred technical solution of the above-mentioned dehumidification control method for an air-conditioning system with independent temperature and humidity control, the exit condition includes at least one of the following conditions:

The difference between the indoor ambient humidity and the humidity of the solid adsorption component is greater than or equal to a second preset difference;

The operating duration of the regeneration mode reaches a first preset duration.

In the preferred technical solution of the above-mentioned dehumidification control method for an air-conditioning system with independent temperature and humidity control, the dehumidification control method further includes:

obtaining the humidity of the indoor environment and the humidity of the solid adsorption component;

calculating the difference between the indoor ambient humidity and the humidity of the solid adsorption component;

comparing the size of the indoor ambient humidity and the second humidity threshold, and the size of the difference and the third preset difference;

Based on the comparison result, the dehumidification unit is selectively controlled to operate in a dehumidification mode or a regeneration mode.

In the preferred technical solution of the above-mentioned dehumidification control method for an air-conditioning system with independent temperature and humidity control, the step of "selectively controlling the dehumidification unit to operate the dehumidification mode or the regeneration mode based on the comparison result" further includes:

When the indoor ambient humidity is greater than or equal to a second humidity threshold and the difference is greater than or equal to the third preset difference, controlling the dehumidification unit to run the dehumidification mode;

When the indoor ambient humidity is greater than or equal to a second humidity threshold and the difference is less than the third preset difference, controlling the dehumidification unit to run the regeneration mode first and then run the dehumidification mode;

When the indoor ambient humidity is less than the second humidity threshold and the difference is greater than or equal to the third preset difference, controlling the dehumidification unit to maintain the current state or only run the regeneration mode;

Wherein, the second humidity threshold is greater than the first humidity threshold.

In the preferred technical solution of the above-mentioned dehumidification control method for an air-conditioning system with independent temperature and humidity control, the dehumidification control method further includes:

judging whether the dehumidification unit satisfies the stop condition;

When the stopping condition is met, controlling the dehumidification unit to stop running;

Wherein, the stop condition includes:

The indoor environment humidity is less than the stop humidity threshold;

The indoor ambient humidity is greater than or equal to the stop humidity threshold but less than the first humidity threshold, and the dehumidification unit runs for a second preset duration.

Those skilled in the art can understand that, in the preferred technical solution of the present invention, when the dehumidification unit operates in the dehumidification mode, it is determined whether the solid adsorption component satisfies the regeneration conditions by combining the indoor ambient humidity and the humidity of the solid adsorption component, and when the Controlling the dehumidification unit to operate in the regeneration mode under regeneration conditions, the dehumidification control method of the present application can determine whether the solid adsorption component needs to be regenerated in combination with the current indoor environment state, so that the regeneration timing of the solid adsorption component is matched with the current ambient humidity. The accuracy of judging the regeneration timing of the adsorption components makes the regeneration of the solid adsorption components more timely and reasonable, realizes the balance between the dehumidification effect and the regeneration effect, and improves the dehumidification efficiency of the air conditioning system.

Further, by further judging whether the heat exchange unit operates in the cooling mode when the regeneration conditions are met, the dehumidification control method of the present application can also reasonably select the regeneration method of the solid adsorption component based on the current state of the heat exchange unit, so that the solid adsorption component The regeneration energy consumption is low, and the impact on the user experience is small.

Further, the dehumidification control method of the present application can also reasonably control the regeneration time based on the current indoor environment state, taking into account Regeneration effect and dehumidification efficiency.

Further, by jointly judging whether to enter the dehumidification mode in combination with the humidity of the indoor environment and the humidity of the solid adsorption component, the dehumidification control method of the present application can also effectively judge whether the adsorption capacity of the current solid adsorption component is sufficient to dehumidify the current room. Dehumidify the room. When the adsorption capacity is insufficient, first regenerate the solid adsorption component, and then dehumidify the room.

Description of drawings

The following describes the control method of the temperature and humidity independent control air conditioning system of the present invention with reference to the accompanying drawings. In the attached picture:

Fig. 1 is the system diagram of the temperature and humidity independent control air-conditioning system in the first embodiment of the present invention;

Fig. 2 is the main flow chart of the dehumidification control method of the temperature and humidity independent control air conditioning system in the first embodiment of the present invention;

3 is a flowchart of a preferred embodiment of the dehumidification control method for the temperature and humidity independent control air conditioning system in the first embodiment of the present invention;

4 is a flow chart of the operation regeneration mode of the dehumidification unit of the temperature and humidity independent control air conditioning system in the first embodiment of the present invention;

FIG. 5 is a system diagram of the temperature and humidity independent control air-conditioning system in the second embodiment of the present invention;

6 is a flowchart of the operation regeneration mode of the dehumidification unit of the temperature and humidity independent control air conditioning system in the second embodiment of the present invention;

FIG. 7 is a logic diagram of a dehumidification control method for an air conditioning system with independent temperature and humidity control in the second embodiment of the present invention.

List of reference signs

1. Heat exchange unit; 11. Compressor; 111. First electric control valve; 12. Outdoor heat exchanger; 121. Outdoor fan; 13. First throttle element; 14. Indoor heat exchanger; 141, Indoor fan ; 142, indoor water receiving tray; 143, condensate water pipe; 15, master controller; 16, chassis;

3. Dehumidification unit; 31, Dehumidification box; 311, Dehumidification air inlet; 312, Dehumidification air outlet; 313, Reduction air inlet; 314, Reduction air outlet; 315, Dehumidification fan; 316, Reduction fan; 32, Solid adsorption Component; 33, reduction water tank; 34, reduction coil; 341, circulating pump; 342, cooling heat exchanger; 343, cooling fan; 35, heat exchange coil; 351, second throttling element; 352, second electric Control valve; 36, cooling water tank; 361, pipeline.

Detailed ways

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principle of the present invention, and are not intended to limit the protection scope of the present invention. For example, although the dehumidification control method is described in conjunction with an air-conditioning system with a single cooling mode, this is not intended to limit the protection scope of the present application. The dehumidification control method is applied to other air conditioning systems. For example, the dehumidification control method of the present application can also be applied to an air-conditioning system with a four-way valve or the like.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The terminology of the indicated direction or positional relationship is based on the direction or positional relationship shown in the drawings, which is only for convenience of description and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation , so it should not be construed as a limitation of the present invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In addition, it should also be noted that, in the description of the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a It is a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Example 1

First, referring to FIG. 1 , the temperature and humidity independent control air conditioning system of the present invention will be described. Among them, FIG. 1 is a system diagram of the temperature and humidity independent control air conditioning system in the first embodiment of the present invention.

As shown in FIG. 1 , in this embodiment, the temperature and humidity independent control air conditioning system (hereinafter referred to as the air conditioning system or system) includes a heat exchange unit 1 and a dehumidification unit 3, and the heat exchange unit 1 mainly includes a compressor 11, an outdoor heat exchange unit 12 , the outdoor fan 121 , the first throttling element 13 , the indoor heat exchanger 14 , the indoor fan 141 and the general controller 15 . The compressor 11, the outdoor heat exchanger 12, the outdoor fan 121, the first throttling element 13 and the general controller 15 are arranged in the casing 16 of the outdoor unit, and the indoor heat exchanger 14 and the indoor fan 141 are arranged in the indoor unit. The compressor 11 , the outdoor heat exchanger 12 , the first throttling element 13 and the indoor heat exchanger 14 are connected by a refrigerant pipe to form a refrigerant cycle, and a first electronically controlled valve 111 is provided at the exhaust port of the compressor 11 . The master controller 15 is respectively connected with the compressor 11 , the outdoor fan 121 , the first electronically controlled valve 111 , the first throttle element 13 and the indoor fan 141 to control the operation of the above components. In this embodiment, the first throttling element 13 may be a valve body with a controllable opening degree such as an electronic expansion valve, and the first electronically controlled valve 111 may be a valve body such as a solenoid valve that can be opened and closed.

It should be noted that, in this embodiment, in order to clearly describe the connection relationship between the above-mentioned components, the components of the outdoor unit are broken up and drawn in FIG. 1. Those skilled in the art can understand that these components are shown in the attached The setting position shown in the figure is not the actual setting position.

Continuing to refer to Fig. 1 , the dehumidification unit 3 includes a dehumidification box 31, a solid adsorption assembly 32 and a reduction assembly (not shown in the figure). The dehumidification box 31 is provided with an openable and closable dehumidification air inlet 311, a dehumidification air outlet 312, a reduction air inlet 313 and a reduction air outlet 314, such as the opening and closing of the above air inlet and air outlet through a damper. The dehumidification air inlet 311 and the dehumidification air outlet 312 are respectively communicated with the room, the dehumidification air outlet 312 is provided with a dehumidification fan 315, the restoration air inlet 313 is communicated with the interior, the restoration air outlet 314 is communicated with the outdoors, and the restoration air outlet 314 is provided with a The blower 316 is restored.

The solid adsorption component 32 is fixed in the dehumidification box 31, and the solid adsorption component 32 includes a solid adsorbent, and the solid adsorbent can be silica gel, molecular sieve, activated alumina, or zeolite. The reduction assembly includes a reduction coil 34 , and the reduction coil 34 is partially coiled on the solid adsorption assembly 32 , such as winding along the outer side of the solid adsorption assembly 32 or directly coiled inside the solid adsorption assembly 32 . The first end of the reduction coil 34 is communicated with the discharge port of the compressor 11, and the second end is communicated with the inlet of the outdoor heat exchanger 12, so that the reduction coil 34 allows the refrigerant (ie, heat exchange medium) to flow therethrough. In addition, a second electronically controlled valve 352 is provided on the reduction coil 34 near the first end. The master controller 15 is also connected with the air valve, the dehumidifying fan 315, the reducing fan 316 and the second electric control valve 352, respectively, to control the operation of the above components. In this embodiment, the second electronically controlled valve 352 may be a valve body that can realize an opening and closing function, such as a solenoid valve.

2, the dehumidification control method of the temperature and humidity independent control air conditioning system of the present application will be described. 2 is the main flow chart of the dehumidification control method of the temperature and humidity independent control air conditioning system in the first embodiment of the present invention.

As shown in FIG. 2, in order to solve the problem of low accuracy in determining the regeneration timing of the adsorbent during the operation of the existing temperature and humidity independent control air conditioning system, the dehumidification control method of the present application mainly includes the following steps:

S101. When the dehumidification unit operates in the dehumidification mode, determine whether the solid adsorption component satisfies the regeneration condition; for example, it can be judged whether the solid adsorption component meets the regeneration condition by judging the humidity (or relative humidity, the same below), wherein the solid adsorption component satisfies the regeneration condition. The humidity of the component can be acquired by a humidity sensor arranged inside or around the solid adsorption component.

Those skilled in the art can understand that when the indoor humidity reaches a certain threshold, it is necessary to dehumidify the room. At this time, the general controller controls the dehumidification unit to operate in the dehumidification mode, that is, controls the dehumidification air inlet and the dehumidification air outlet to open, and Control the dehumidification fan to start, the indoor air enters the dehumidification box from the dehumidification air inlet driven by the dehumidification fan, and when passing through the solid adsorption component, the moisture in the air is adsorbed on the solid adsorbent and becomes dry air, and the dry air passes through the dehumidification. The air outlet returns to the room, and the indoor humidity decreases accordingly. When the dehumidification unit operates in the dehumidification mode for a period of time, the adsorption capacity of the solid adsorption component decreases. When the adsorption capacity drops to a certain level, the solid adsorption module needs to be regenerated. Therefore, when the dehumidification unit operates in the dehumidification mode, it is determined whether the solid adsorption component is meet the regeneration conditions.

S103. When the regeneration condition is satisfied, control the dehumidification unit to operate the regeneration mode; for example, when the humidity of the solid adsorption component is greater than a certain threshold, control the dehumidification unit to operate the regeneration mode.

When the humidity of the solid adsorption component is greater than a certain threshold, it proves that the solid adsorption component has more water attached at this time, its adsorption capacity is greatly reduced, and the dehumidification efficiency of the air conditioning system is also reduced. At this time, the solid adsorption component needs to be regenerated. Therefore, Control the dehumidification unit to run the regeneration mode to remove the moisture inside the solid adsorption component.

Preferably, the regeneration conditions include at least one of the following conditions: the indoor ambient humidity is greater than or equal to a first humidity threshold and the difference between the indoor ambient humidity and the humidity of the solid adsorption component is less than a first preset difference. The indoor ambient humidity is greater than or equal to the first humidity threshold and the rate of decrease of the indoor ambient humidity is less than the rate threshold.

For example, the first humidity threshold may be 55%, and the first preset difference may be 5%. When the indoor ambient humidity is greater than or equal to 55%, it proves that although the indoor humidity has decreased, it has not yet reached the optimal humidity range , it is still necessary to continue dehumidification, and the difference between the indoor ambient humidity and the humidity of the solid adsorption component is less than 5%, which proves that the humidity of the two is relatively close. Although the dehumidification can be continued, the adsorption capacity of the solid adsorption component in this state is Therefore, it is necessary to regenerate the solid adsorption component in time to improve its adsorption capacity, thereby improving the dehumidification efficiency of the air conditioning system.

For another example, the first humidity threshold may also be 60%, and the rate threshold may be 0.5%/min. When the indoor ambient humidity is greater than or equal to 60%, it proves that the indoor humidity has not yet reached the optimal humidity range, and it is necessary to continue dehumidification. At this time, the falling speed of indoor humidity can be calculated by obtaining the indoor environmental humidity value for a period of time. When the falling speed is less than 0.5%/min, it proves that the falling speed is slow at this time. Although the dehumidification can still be continued, the solid adsorption component The dehumidification capacity of the air conditioner is insufficient, and it needs to be regenerated in time to improve its adsorption capacity, thereby improving the dehumidification efficiency of the air conditioning system.

By jointly judging whether the solid adsorption component satisfies the regeneration conditions by combining the indoor ambient humidity and the humidity of the solid adsorption component when the dehumidification unit operates in the dehumidification mode, and controlling the dehumidification unit to operate in the regeneration mode when the regeneration conditions are satisfied, the dehumidification control method of the present application can Judging whether the solid adsorption component needs to be regenerated in combination with the current indoor environment state, so that the regeneration timing of the solid adsorption component matches the current environmental humidity, improving the accuracy of judging the regeneration timing of the solid adsorption component, and making the regeneration of the solid adsorption component better and timely. Reasonable, to achieve the balance of dehumidification effect and regeneration effect, improve the dehumidification efficiency of the air conditioning system.

Next, referring to FIG. 3 and FIG. 4 , a more preferred embodiment of the dehumidification control method of the present application will be described. Among them, FIG. 3 is a flowchart of a preferred embodiment of the dehumidification control method of the temperature and humidity independent control air conditioning system in the first embodiment of the present invention; FIG. 4 is the dehumidification of the temperature and humidity independent control air conditioning system in the first embodiment of the present invention. Flow chart of unit operating regeneration mode.

As shown in FIG. 3, in a more preferred embodiment, the dehumidification control method of the temperature and humidity independent control air conditioning system of the present application includes the following steps:

S201. Acquire the indoor ambient humidity and the humidity of the solid adsorption assembly; for example, obtain the indoor ambient humidity through a humidity sensor disposed at the dehumidification air inlet of the dehumidification box or any position of the indoor unit, and obtain the indoor ambient humidity through a humidity sensor disposed inside the solid adsorption assembly or its periphery. The humidity sensor acquires the humidity of the solid adsorption component.

S203. Calculate the difference between the indoor environmental humidity and the humidity of the solid adsorption component; for example, after obtaining the indoor environmental humidity and the humidity of the solid adsorption component, use the indoor environmental humidity to subtract the humidity of the solid adsorption component to obtain the relative humidity of the two. difference.

S205. Compare the size of the indoor ambient humidity and the second humidity threshold, and the difference between the difference and the third preset difference; for example, the second humidity threshold is 60%, and the third preset difference is 10%, after the calculation After the difference between the two, compare the indoor ambient humidity with 60%, and the difference with 10%.

When the indoor ambient humidity is greater than or equal to the second humidity threshold, it proves that the indoor humidity is too high at this time, and it is not in the comfort zone, and it is necessary to dehumidify the room. When the difference between the indoor environmental humidity and the humidity of the solid adsorption component is greater than or equal to the third preset difference, it proves that the difference between the solid adsorption component and the indoor environmental humidity is large, the adsorption capacity is good, and it can be used to adsorb indoor moisture.

After comparing the indoor ambient humidity with the second humidity threshold, and the difference with the third preset difference, based on the comparison result, the dehumidification unit is selectively controlled to operate the dehumidification mode or the regeneration mode. specifically:

(1) When the indoor ambient humidity is greater than or equal to the second humidity threshold, but the difference between the indoor ambient humidity and the humidity of the solid adsorption component is less than the third preset difference, step S207 is executed to control the dehumidification unit to run the regeneration mode first, and then run Dehumidification mode. When the indoor ambient humidity is greater than the second humidity threshold, it proves that the indoor humidity is too high at this time, and it is not in the comfortable range, and it is necessary to dehumidify the room. When the difference between the indoor environment humidity and the humidity of the solid adsorption component is less than the third preset difference, it proves that the difference between the solid adsorption component and the indoor environment humidity is small, the adsorption capacity is weak, and it is not suitable for adsorbing indoor moisture. At this time, the dehumidification unit is controlled to operate the regeneration mode to regenerate the solid adsorption component, and then the dehumidification unit is controlled to operate the dehumidification mode, and the solid adsorption component is used to dehumidify the room.

(2) When the indoor ambient humidity is greater than the second humidity threshold, and the difference between the indoor ambient humidity and the humidity of the solid adsorption component is greater than or equal to the third preset difference, step S211 is executed to control the dehumidification unit to operate the dehumidification mode. When the indoor ambient humidity is greater than or equal to the second humidity threshold, it proves that the indoor humidity is too high at this time, and it is not in the comfort zone, and it is necessary to dehumidify the room. When the difference between the indoor environmental humidity and the humidity of the solid adsorption component is greater than or equal to the third preset difference, it proves that the difference between the solid adsorption component and the indoor environmental humidity is large, the adsorption capacity is good, and it can be used to adsorb indoor moisture. Therefore, at this time, it is possible to directly control the dehumidification unit to run the dehumidification mode, and use the solid adsorption component to absorb indoor moisture to dehumidify the room.

(3) When the indoor ambient humidity is less than the second humidity threshold, and the difference between the indoor ambient humidity and the humidity of the solid adsorption component is less than the third preset difference, step S217 is executed to control the dehumidification unit to operate only in the regeneration mode. When the indoor ambient humidity is less than the second humidity threshold, it proves that the indoor humidity is relatively suitable at this time, and it is in the comfortable range, so there is no need to dehumidify the room. When the difference between the indoor ambient humidity and the humidity of the solid adsorption component is less than the third preset difference, it proves that the difference between the solid adsorption component and the indoor ambient humidity is small at this time, and although it has a certain adsorption capacity, it still has insufficient adsorption capacity. Therefore, for the sake of safety, the dehumidification unit can be controlled to only run in the regeneration mode, so that the solid adsorption component can maintain a better adsorption capacity after regeneration. Of course, those skilled in the art can understand that, when the above judgment conditions are met, the dehumidification unit can also be controlled to maintain the current state and not run the regeneration mode to save electricity.

(4) When the indoor ambient humidity is less than the second humidity threshold, and the difference between the indoor ambient humidity and the humidity of the solid adsorption component is greater than or equal to the third preset difference, the current state is maintained and no operation is performed. When the indoor ambient humidity is less than the second humidity threshold, it proves that the indoor humidity is relatively suitable at this time, and it is in the comfortable range, so there is no need to dehumidify the room. When the difference between the indoor ambient humidity and the humidity of the solid adsorption component is greater than or equal to the third preset difference, it proves that the difference between the solid adsorption component and the indoor ambient humidity is large, and the adsorption capacity is strong, so no operation is required to control The dehumidification unit remains in its current operating state.

By judging whether the dehumidification unit enters the dehumidification mode by combining the indoor ambient humidity and the humidity of the solid adsorption component, the dehumidification control method of the present application can effectively judge whether the adsorption capacity of the current solid adsorption component is sufficient to dehumidify the current room, and when the capacity is sufficient, Effective dehumidification is carried out indoors. When the adsorption capacity is insufficient, the solid adsorption components are regenerated first, and then the indoor dehumidification is carried out to ensure the dehumidification efficiency and effect.

3, when the dehumidification unit operates in the dehumidification mode (step S211), the dehumidification control method further includes:

S213, determine whether the solid adsorption assembly satisfies the regeneration conditions; when the regeneration conditions are met, return to step S207 to control the dehumidification unit to operate the regeneration mode; otherwise, when the regeneration conditions are not met, execute step S215 to further determine whether the dehumidification unit meets the stop conditions ; When the stop condition is met, step S221 is executed to control the dehumidification unit to stop running; otherwise, when the stop condition is not met, return to step S211 to control the dehumidification unit to continue to run in the dehumidification mode.

The regeneration condition includes at least one of the following conditions: the indoor ambient humidity is greater than or equal to a first humidity threshold and the difference between the indoor ambient humidity and the humidity of the solid adsorption component is less than a first preset difference. The indoor ambient humidity is greater than or equal to the first humidity threshold and the rate of decrease of the indoor ambient humidity is less than the rate threshold.

The stopping conditions include: the indoor ambient humidity is less than the stop humidity threshold; the indoor ambient humidity is greater than or equal to the stop humidity threshold but less than the first humidity threshold, and the operation duration of the dehumidification unit reaches the second preset duration.

For example, still taking the first humidity threshold value of 55% and the first preset difference value of 5% as an example, when the indoor ambient humidity is greater than or equal to 55%, it proves that although the indoor humidity has decreased, it is still not optimal. In the humidity range, it is still necessary to continue dehumidification. At this time, the difference between the indoor ambient humidity and the humidity of the solid adsorption component is less than 5%, which proves that the humidity of the two is relatively close. Although the dehumidification can be continued, the solid adsorption component is in this state. The adsorption capacity is greatly reduced, so it is necessary to regenerate the solid adsorption component in time to improve its adsorption capacity, thereby improving the dehumidification efficiency of the air conditioning system.

For another example, the first humidity threshold may be 55%, and the rate threshold may be 0.5%/min. When the indoor ambient humidity is greater than or equal to 55%, it proves that the indoor humidity has not yet reached the optimal humidity range, and dehumidification needs to be continued. At this time, the falling speed of indoor humidity can be calculated by obtaining the indoor environmental humidity value for a period of time. When the falling speed is less than 0.5%/min, it proves that the falling speed is slow at this time. Although the dehumidification can still be continued, the solid adsorption component The dehumidification capacity of the air conditioner is insufficient, and it needs to be regenerated in time to improve its adsorption capacity, thereby improving the dehumidification efficiency of the air conditioning system.

Another example, the stop humidity threshold can be 50%. When the indoor ambient humidity is less than 50%, it proves that the indoor humidity has dropped to a better humidity range at this time, and there is no need to continue dehumidification at this time, so the dehumidification unit is controlled to stop running; otherwise , it is still necessary to continue to run the dehumidification mode to dehumidify the room.

For another example, the first humidity threshold can still be 55%, and the second operating time can be 30 minutes. When the indoor ambient humidity is greater than 50% but less than 55%, and the operating time of the dehumidification mode has reached 30 minutes, it proves that the dehumidification is slow at this time. In addition, the current indoor humidity is not within the humidity range that the solid adsorption components need to be regenerated. At this time, in order to save energy, although the indoor humidity has not reached the optimal humidity, the current humidity has dropped to a range close to this humidity, so you can choose to turn off the dehumidification. unit.

By jointly judging whether the solid adsorption component satisfies the regeneration conditions by combining the indoor ambient humidity and the humidity of the solid adsorption component when the dehumidification unit operates in the dehumidification mode, and controlling the dehumidification unit to operate in the regeneration mode when the regeneration conditions are satisfied, the dehumidification control method of the present application can Judging whether the solid adsorption component needs to be regenerated according to the current state of the indoor environment, so as to match the regeneration timing of the solid adsorption component with the current environmental humidity, improve the accuracy of judging the regeneration timing of the solid adsorption component, and make the regeneration of the solid adsorption component better and timely. , reasonable, to achieve the balance of dehumidification effect and regeneration effect, improve the dehumidification efficiency of the air conditioning system. By adding consideration to the running time when judging whether the dehumidification unit satisfies the stop condition, the dehumidification control method of the present application can also save energy and effectively avoid unnecessary consumption of electric energy due to low dehumidification efficiency.

Continuing to refer to FIG. 3 , after step S207 of the dehumidification unit running the regeneration mode, the dehumidification control method further includes:

S209, determine whether the dehumidification unit satisfies the exit condition; when the exit condition is met, step S211 is executed to control the dehumidification unit to exit the regeneration mode and continue to run the dehumidification mode; otherwise, when the exit condition is not met, continue to maintain the regeneration mode operation.

The exit condition includes at least one of the following conditions: the difference between the indoor ambient humidity and the humidity of the solid adsorption component is greater than or equal to a second preset difference; and the running duration of the regeneration mode reaches the first preset duration.

For example, the second preset difference value may be 10%. When the difference between the indoor ambient humidity and the humidity of the solid adsorption component is greater than 10%, it proves that the solid adsorption component is greatly different from the indoor humidity, and it also proves that the solid adsorption component has recovered. When enough adsorption capacity is reached, there is no need to continue to run the regeneration mode, but to exit the regeneration mode in time and run the dehumidification mode.

For another example, the first preset time period may be 10 minutes. When the regeneration mode of the solid adsorption component runs for more than 10 minutes, even if the difference between the indoor ambient humidity and the humidity of the solid adsorption component does not reach the standard of more than 10%, the solid adsorption component is Since it has been running in the regeneration mode for a sufficient time, its adsorption capacity is basically sufficient. Therefore, it is possible to exit the regeneration mode in time and run the dehumidification mode at this time.

By judging whether the exit condition is satisfied when the dehumidification unit is running in the regeneration mode, and exiting the regeneration mode and continuing to operate the dehumidification mode when the exit condition is satisfied, the dehumidification control method of the present application can also reasonably control the regeneration time based on the current indoor environment state, taking into account the regeneration effect and dehumidification efficiency.

Still referring to FIG. 3 , similar to the above control method, when step S217 is executed, that is, the step of running the regeneration mode of the dehumidification unit, the dehumidification control method further includes:

S219: Determine whether the dehumidification unit satisfies the exit condition; when the exit condition is met, step S221 is executed to control the dehumidification unit to exit the regeneration mode; otherwise, when the exit condition is not met, the operation in the regeneration mode is continued.

For example, the exit conditions are the same as the above-mentioned conditions. When the exit conditions are met, it proves that the adsorption capacity of the solid adsorption component has been restored at this time, so there is no need to run the regeneration mode again. The premise of performing step S219 is that the indoor ambient humidity is less than the second humidity threshold, and at this time, no dehumidification is required in the room, so the dehumidification unit can be controlled to stop running after exiting the regeneration mode.

1 and FIG. 4, the control mode of the dehumidification unit operation regeneration mode will be described in detail. As shown in FIG. 4 , the steps (S207 and S217) of the dehumidification unit operating the regeneration mode specifically include:

S301. Obtain the operation mode of the heat exchange unit; for example, in this embodiment, the operation mode of the heat exchange unit includes a cooling mode, an air supply mode, etc., and the current heat exchange unit can be determined by obtaining operation parameters or judging whether the compressor is running or not. operating mode.

S303. Determine whether the heat exchange unit operates in the cooling mode, and based on the determination result, control the dehumidification unit to operate in the regeneration mode. Specifically, when the heat exchange unit operates in the cooling mode, step S305 is executed to control the opening of the reduction air inlet and the reduction air outlet, the dehumidification air inlet and the dehumidification air outlet are closed, the reduction fan is controlled to be turned on, the dehumidification fan is turned off, and the second power supply is controlled to be turned on. The control valve is opened and the first electronic control valve is closed; otherwise, when the heat exchange unit is not operating in the refrigeration mode, step S307 is executed to control the dehumidification unit to maintain the state before entering the regeneration mode.

For example, referring to FIG. 1 , when the heat exchange unit 1 operates in a cooling mode, the compressor 11 is in an operating state, and the refrigerant is in a circulating state. At this time, the solid adsorption component 32 can be heated by passing the high-temperature and high-pressure refrigerant discharged from the compressor 11 through the reduction coil 34 to realize its regeneration. At this time, the second electric control valve 352 is controlled to open and the first electric control valve 111 is closed to change the path of the refrigerant, so that the refrigerant continues to circulate after passing through the reduction coil 34 . Then, the reduction air inlet 313 and the reduction air outlet 314 are controlled to open, the dehumidification air inlet 311 and the dehumidification air outlet 312 are closed, and the reduction fan 316 is controlled to open and the dehumidification fan 315 is closed. The air port 313 enters the dehumidification box 31 and is discharged from the reduction air outlet 314 to the outside. The high temperature and high pressure gaseous refrigerant discharged from the compressor 11 is first circulated to the solid adsorption component 32 through the reduction coil 34 and then continues the conventional refrigeration cycle. The moisture in the air is heated and evaporated into water vapor by the high temperature and high pressure refrigerant, and the precipitated water vapor is discharged to the outside together with the indoor air, and the solid adsorption component 32 is regenerated.

When the heat exchange unit 1 is not operating in the cooling mode, the compressor 11 is in a stopped state, and the refrigerant is in a non-circulating state. At this time, the regeneration of the solid adsorption assembly 32 cannot be achieved by the refrigerant flowing through the reduction coil 34 . Since the judgment condition for entering the regeneration mode has a certain margin, that is, the solid adsorption component 32 still has a certain adsorption capacity, so the dehumidification unit 3 can be controlled to keep the state before entering the regeneration mode, that is, if the dehumidification mode is running before, Continue to keep the dehumidification mode running, if it was in the stopped state before, continue to keep the stopped state.

By further judging whether the heat exchange unit operates in the cooling mode when the regeneration conditions are met, the dehumidification control method of the present application can also reasonably select the regeneration method of the solid adsorption component based on the current state of the heat exchange unit, so that the regeneration energy of the solid adsorption component Low consumption and little impact on user experience, avoiding the phenomenon of blowing cold air into the room during the regeneration process.

Of course, those skilled in the art can also adjust this step after referring to the structure shown in FIG. 1 , so that the dehumidification module operates in the regeneration mode. For example, by turning on the compressor 11 and maintaining low-frequency operation, the outdoor fan 121 can be controlled to start, the indoor fan 141 to run at a low speed, the air deflector of the indoor unit to be closed, and the first throttling element 13 to be opened to a certain opening, so as to achieve the best possible opening. On the premise that the indoor temperature is not affected, the heat exchange unit 1 operates in the cooling mode. Then control the second electric control valve 352 to open, the first electric control valve 111 to close, control the dehumidification fan 315 to close, the reduction fan 316 to open, control the reduction air inlet 313 and the reduction air outlet 314 to open, the dehumidification air inlet 311 and the dehumidification outlet The air port 312 is closed to realize the regeneration of the solid adsorption component 32 by the refrigerant passing through the reduction coil 34 .

Example 2

5 and 6, the second embodiment of the dehumidification control method of the present application will be introduced. 5 is a system diagram of the temperature and humidity independent control air conditioning system in the second embodiment of the present invention; FIG. 6 is a flow chart of the dehumidification unit operation regeneration mode of the temperature and humidity independent control air conditioning system in the second embodiment of the present invention.

As shown in FIG. 5 and FIG. 6 , the difference between this embodiment and Example 1 is that the specific structure of the air conditioning system is different, and the regeneration mode control method of the dehumidification unit 3 is different.

Specifically, referring to FIG. 5 , in this embodiment, the heat exchange unit 1 further includes an indoor water receiving tray 142 and a condensate water pipe 143 . The indoor water receiving tray 142 is arranged in the indoor unit, one end of the condensate water pipe 143 is communicated with the indoor water receiving tray 142, and the other end is led out of the outdoor.

The reduction component of the dehumidification unit 3 also includes a reduction water tank 33 , a heat exchange coil 35 , a cooling water tank 36 , a cooling heat exchanger 342 and a cooling fan 343 . Among them, the reduction water tank 33 stores heat exchange liquid (ie, heat exchange medium), such as water or salt water. The cooling water tank 36 is connected, the cooling water tank 36 stores a cooling liquid, such as water or salt water, etc., the cooling water tank 36 is communicated with the reduction water tank 33 through the pipeline 361, and the cooling water tank 36 is higher than the reduction water tank 33 in the setting height. A circulating pump 341 is arranged on the reduction coil 34 near the first end, and a cooling heat exchanger 342 is arranged near the second end. Heat Exchanger. In addition, the condensed water pipe 143 is led out of the outdoor and communicated with the cooling water tank 36 .

A part of the heat exchange coil 35 is arranged in the reduction water tank 33, and the part arranged in the reduction water tank 33 is S-shaped. After the heat exchange coil 35 is coiled, its first end extends out of the reduction water tank 33 and communicates with the exhaust port of the compressor 11 of the air conditioning system, and the second end extends out of the reduction water tank 33 and communicates with the outdoor heat exchanger 12 of the air conditioning system. import connection. Wherein, the heat exchange coil 35 is also provided with a second electronically controlled valve 352 at the position close to the first end, such as a solenoid valve and other valve bodies that can realize the opening and closing function, and the heat exchange coil 35 is also provided at the position close to the second end. There is a second throttling element 351, such as an electronic expansion valve or the like, which can control the opening degree of the valve body. The first electronically controlled valve 111 is located on the refrigerant pipe between the first end and the second end of the heat exchange coil 35 .

The general controller 15 of the air conditioning system is also connected to the circulation pump 341, the second throttle element 351 and the cooling fan 343, respectively, to control the operation of the above components.

6, under the premise of adopting the above-mentioned setting method, when the dehumidification unit operates the regeneration mode, the steps of the dehumidification unit operating the regeneration mode specifically include:

S401. Obtain the operation mode of the heat exchange unit; for example, in this embodiment, the operation mode of the heat exchange unit includes a cooling mode, an air supply mode, etc., and the current heat exchange unit can be determined by obtaining operation parameters or judging whether the compressor is running or not. operating mode.

S403. Determine whether the heat exchange unit operates in the cooling mode, and based on the determination result, control the dehumidification unit to operate in the regeneration mode. Specifically, when the heat exchange unit operates in the cooling mode, step S405 is executed to control the opening of the reduction air inlet and the reduction air outlet, the dehumidification air inlet and the dehumidification air outlet are closed, the reduction fan, the cooling fan and the circulation pump are controlled to be turned on, and the dehumidification fan is controlled to be turned on. closed, control the second electric control valve to open, the first electric control valve to close, and the second throttling element to fully open; otherwise, when the heat exchange unit is not operating in the refrigeration mode, step S407 is executed to control the restoration air inlet and the restoration air outlet Open, dehumidification air inlet and dehumidification air outlet are closed, control compressor, outdoor fan, reduction fan, cooling fan and circulation pump to open, dehumidification fan is closed, control the second electric control valve to open, the first electric control valve to close, the first electric control valve The throttle element is fully opened, and the second throttle element is opened to the set opening degree.

For example, referring to FIG. 5 , when the heat exchange unit 3 operates in the cooling mode, the compressor 11 is in an operating state, and the refrigerant is in a circulating state. At this time, the high temperature and high pressure refrigerant discharged from the compressor 11 can heat the heat exchange liquid in the reduction water tank 33 and then pass the heat exchange liquid through the reduction coil 34 to heat the solid adsorption component 32 to achieve its regeneration. At this time, the second electric control valve 352 is controlled to open, the first electric control valve 111 is closed, and the second throttle element 351 is fully opened to change the path of the refrigerant, so that the refrigerant continues to participate in the refrigeration cycle after passing through the heat exchange tube. Then control the reduction air inlet 313 and the reduction air outlet 314 to open, the dehumidification air inlet 311 and the dehumidification air outlet 312 to close, and control the reduction fan 316, the cooling fan 343 and the circulation pump 341 to open, and the dehumidification fan 315 to close. Driven by the reduction fan 316, the indoor air enters the dehumidification box 31 from the reduction air inlet 313, and is discharged to the outdoors from the reduction air outlet 314. The high-temperature and high-pressure gaseous refrigerant discharged from the compressor 11 enters the reduction water tank 33 through the heat exchange coil 35. And heat the heat exchange liquid in the reduction water tank 33, and the circulation pump 341 drives the heat exchange liquid to circulate between the reduction water tank 33 and the cooling water tank 36. When the heat exchange liquid is heated to a higher temperature and circulated to the solid adsorption component 32, the solid adsorption The moisture in the component 32 is heated by the heat exchange liquid, evaporated into water vapor and precipitated, and the precipitated water vapor is discharged to the outdoor together with the indoor air, and the solid adsorption component 32 is regenerated. The heat exchange liquid entering the cooling water tank 36 exchanges heat with the outdoor air when passing through the cooling heat exchanger 342 to reduce the temperature.

When the heat exchange unit 1 is not operating in the cooling mode, the compressor 11 is in a stopped state, and the refrigerant is in a non-circulating state. At this time, the compressor 11 and the outdoor fan 121 are controlled to open, the second electric control valve 352 is opened, the first electric control valve 111 is closed, the first throttle element 13 is fully opened, and the second throttle element 351 is opened to the set opening degree, Make the refrigerant form a circulation loop, then control the reduction air inlet 313 and the reduction air outlet 314 to open, the dehumidification air inlet 311 and the dehumidification air outlet 312 to close, and control the reduction fan 316, the cooling fan 343 and the circulation pump 341 to open. Driven by the reduction fan 316, the indoor air enters the dehumidification box 31 from the reduction air inlet 313, and is discharged to the outdoors from the reduction air outlet 314, and the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 11 enters the reduction water tank 33 through the heat exchange coil 35. After heat exchange with the heat exchange liquid in the reducing water tank 33, it becomes a medium temperature and high pressure liquid refrigerant, and the medium temperature and high pressure liquid refrigerant becomes a low temperature and low pressure gas-liquid two-phase refrigerant after being throttled by the second throttling element 351, and a low temperature and low pressure gas-liquid two-phase refrigerant. The two-phase refrigerant enters the outdoor heat exchanger 12 for heat exchange with the outdoor air and becomes a low-temperature and low-pressure gaseous refrigerant. The circulating pump 341 drives the heated heat exchange liquid to circulate between the reduction water tank 33 and the cooling water tank 36. When the heat exchange liquid is heated to a higher temperature and circulated to the solid adsorption component 32, the moisture in the solid adsorption component 32 is heat exchanged The liquid is heated and evaporated into water vapor and precipitated, and the precipitated water vapor is discharged to the outdoor together with the indoor air, and the solid adsorption component 32 is regenerated. The heat exchange liquid entering the cooling water tank 36 exchanges heat with the outdoor air when passing through the cooling heat exchanger 342 to reduce the temperature.

By further judging whether the heat exchange unit operates in the cooling mode when the regeneration conditions are met, the dehumidification control method of the present application can also reasonably select the regeneration method of the solid adsorption component based on the current state of the heat exchange unit, so that the regeneration energy of the solid adsorption component Low consumption and little impact on user experience, avoiding the phenomenon of blowing cold air into the room during the regeneration process. By setting the reduction water tank and the heat exchange coil in the reduction component, when the solid adsorption component needs to be regenerated, the high temperature refrigerant discharged from the compressor during the operation of the air conditioning system can be used to heat the heat exchange liquid in the reduction water tank through the heat exchange coil, and then The heating and regeneration of the solid adsorption component is realized by using a circulating pump to drive the heat exchange liquid to circulate. By setting a cooling water tank, and setting a cooling heat exchanger and a cooling fan on the reduction coil, it is possible to prevent the heat exchange liquid from evaporating too quickly and lacking due to the high temperature of the heat exchange liquid under the premise of ensuring that the heat exchange liquid is at an appropriate heating temperature. Water and other conditions appear to improve regeneration stability.

In addition, the setting of the cooling water tank can further improve the heat exchange effect of the refrigerant, improve the operating efficiency of the air conditioner, and reduce the operating energy consumption. By arranging the second throttling element, the regeneration process of the solid adsorption component can be run independently, without the need to use the cooling mode to achieve, thereby avoiding the degradation of user experience caused by the reduction of indoor temperature during the regeneration process of the solid adsorption component.

Referring to FIG. 7 , a possible control flow of the second embodiment of the present application will be described below. 7 is a logic diagram of a dehumidification control method for an air-conditioning system with independent temperature and humidity control in the second embodiment of the present invention.

As shown in FIG. 7 , in a possible control process, step S501 is first performed to obtain the indoor ambient humidity RH _n and the humidity RH _m of the solid adsorption component.

Then step S502 is executed to calculate the difference between the indoor ambient humidity and the humidity of the solid adsorption component ΔRH= _RHn - _RHm .

Next, step S503 is executed to determine whether RH _n ≥ 60% and ΔRH ≥ 10% are established; when both are established at the same time, it proves that the indoor humidity is too high and the adsorption capacity of the solid adsorption component is sufficient. At this time, step S504 is executed to control the dehumidification The unit runs the dehumidification mode, otherwise, when the two are not established at the same time, step S505 is executed to further determine whether RH _n ≥ 60% is established.

When RH _n ≥ 60% is established, it proves that the indoor humidity is too high but the adsorption capacity of the solid adsorption component is insufficient. At this time, step S506 is executed to control the dehumidification unit to run the regeneration mode first, and then run the dehumidification mode; otherwise, when RH _n ≥ 60% If not, step S507 is executed, and it is further judged whether ΔRH≥10% is established.

When △RH≥10% is established, it proves that the indoor humidity is suitable but the solid adsorption component has the risk of insufficient adsorption capacity. At this time, step S508 is executed to control the dehumidification module to run the regeneration mode, and the control ends when the regeneration mode meets the exit conditions; otherwise, when the △ When RH ≥ 10% is not established, it proves that the indoor humidity is suitable, and the adsorption capacity of the solid adsorption component is strong, and the control is directly ended at this time.

When step S504 is executed, the dehumidification unit operates in the dehumidification mode, or when step S506 is executed until the dehumidification unit operates in the dehumidification mode, the indoor ambient humidity RH _n and the running time t ₁ are obtained, and step S509 is executed to determine whether RH _n <50% is established ; When RH _n < 50% is established, it proves that the indoor humidity has dropped to the range, then step S510 is executed, the dehumidification unit is controlled to stop running, and the control is ended; otherwise, when RH _n < 50% is not established, step S510 is executed S511, further determine whether 50% _≤RHn <55% and _t1≥30min hold.

When 50% _≤RHn <55% and t ₁ ≥30min is established, it proves that the indoor humidity is close to the appropriate interval and the running time is too long, then step S510 is executed to control the dehumidification unit to stop running and end the control; otherwise, execute step S512 , and further calculate the falling speed v=ΔRH _n /t ₂ of the indoor humidity within the set time t ₂ based on the indoor ambient humidity RH _n , and then determine whether RH _n ≥ 55% and v<0.5%/min.

When RH _{n ≥} 55% and v<0.5%/min is established, it proves that the adsorption capacity of the solid adsorption component is insufficient and needs to be regenerated. At this time, step S513 is performed to further determine whether the heat exchange unit is in cooling operation; otherwise, when RH _{n ≥} 55 % and v<0.5%/min does not hold, it proves that the adsorption capacity of the solid adsorption component is acceptable. At this time, return to step S504 to control the dehumidification unit to continue to run the dehumidification mode.

When the heat exchange unit operates in the cooling mode, step S514 is executed to control the dehumidification unit to operate in the first regeneration sub-mode, that is, the reduction air inlet and the reduction air outlet are controlled to open, the dehumidification air inlet and the dehumidification air outlet are closed, and the reduction fan is controlled , the cooling fan and the circulating pump are turned on, the dehumidifying fan is turned off, and the second electric control valve is controlled to open, the first electric control valve is closed, and the second throttling element is fully opened; otherwise, when the heat exchange unit is not operating in the cooling mode, step S515 is executed , Control the dehumidification unit to operate in the second regeneration sub-mode, that is, control the opening of the reduction air inlet and the reduction air outlet, the dehumidification air inlet and the dehumidification air outlet are closed, and the compressor, outdoor fan, reduction fan, cooling fan and circulation pump are controlled to open , the dehumidification fan is turned off, the second electric control valve is controlled to open, the first electric control valve is closed, the first throttling element is fully opened, and the second throttling element is opened to the set opening degree.

When the dehumidification unit runs the first regeneration sub-mode, step S516 is executed to calculate the difference ΔRH between the indoor ambient humidity RH _n and the humidity RH _m of the solid adsorption component, obtain the running time t ₃ of the regeneration mode, and determine ΔRH≥10% Or whether t ₃ ≥ 5min is established; when ΔRH ≥ 10% or t ₃ ≥ 5min is established, control the dehumidification unit to exit the first regeneration sub-mode and return to step S504 to continue to run the dehumidification mode; otherwise, when ΔRH ≥ 10 When % or t ₃ ≥ 5 min is not established, return to step S514 to control the dehumidification unit to continue to run the first regeneration sub-mode.

When the dehumidification unit operates the second regeneration sub-mode, step S517 is executed to calculate the difference ΔRH between the indoor ambient humidity RH _n and the humidity RH _m of the solid adsorption component, obtain the running time t ₄ of the regeneration mode, and determine ΔRH≥10% Or whether t ₄ ≥ 5min is established; when ΔRH ≥ 10% or t ₄ ≥ 5min is established, control the dehumidification unit to exit the second regeneration sub-mode and return to step S504 to continue to run the dehumidification mode; otherwise, when ΔRH ≥ 10 When % or t ₄ ≥ 5 min is not established, return to step S515 to control the dehumidification unit to continue to run the second regeneration sub-mode.

In the above-mentioned embodiment, although each step is described according to the above-mentioned order, those skilled in the art can understand that, in order to realize the effect of this embodiment, different steps need not be performed in this order, and it can be performed simultaneously ( parallel) or in reverse order, simple variations of these are within the scope of the present invention. For example, the steps of comparing the size of the indoor ambient humidity and the second humidity threshold, and the step of comparing the size of the difference between the indoor ambient temperature and the humidity of the solid adsorption component and the size of the third preset difference, the order between the two can be replaced For another example, the steps of judging whether the dehumidification unit exits the dehumidification mode and whether it runs the regeneration mode can be exchanged.

It should also be noted that, in the above embodiments, the structure of the air conditioning system is only used to illustrate the principle of the present application, and is not intended to limit the protection scope of the present application. Without departing from the principles of the present application, those skilled in the art can adjust the structure of the above-mentioned air conditioning system, so that the present application can be applied to more specific application scenarios.

For example, in an alternative embodiment, the installation positions of the dehumidification fan 315 and the reduction fan 316 are not unique, and the installation positions of the two can also be replaced under the condition that the indoor air can pass through the solid adsorption assembly 32. For example, the dehumidification fan 315 may also be disposed at the dehumidification air inlet 311 , and the reduction fan 316 may also be disposed at the restoration air inlet 313 and so on.

For another example, in another alternative embodiment, although the reduction coil 34 in the above-mentioned embodiment 2 is described in combination with a part of the coil being arranged inside the solid adsorption component 32 and being coiled in an S shape, those skilled in the art can The setting method is adjusted, as long as the adjusted setting method can make the condition that the coil 34 heats the solid adsorption component 32 . For example, the reduction coil 34 may also be wound along the outer surface of the solid adsorption component 32 , or spirally coiled on the inner side of the solid adsorption component 32 .

For another example, in another alternative embodiment, those skilled in the art may selectively omit one or more of the following components in specific applications, so that the present application can meet different application scenarios. Components include but are not limited to: cooling water tank 36 , cooling heat exchanger 342 , cooling fan 343 , first electronically controlled valve 111 , second electronically controlled valve 352 , first throttling element 13 , indoor water tray 142 , condensate water pipe 143 . Accordingly, it is only necessary to make corresponding adjustments in the control method.

Of course, the above-mentioned alternative embodiments, as well as between the alternative embodiments and the preferred embodiments, can also be used in cross-combination, so that new embodiments can be combined to be suitable for more specific application scenarios.

Those skilled in the art can understand that the above-mentioned general controller also includes some other well-known structures, such as processors, controllers, memories, etc., wherein the memories include but are not limited to random access memory, flash memory, read-only memory, programmable read-only memory, Volatile memory, non-volatile memory, serial memory, parallel memory or registers, etc., processors include but are not limited to CPLD/FPGA, DSP, ARM processor, MIPS processor, etc. These well-known structures are not shown in the drawings in order to unnecessarily obscure the embodiments of the present disclosure.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

It should be noted that although the detailed steps of the method of the present invention are described in detail above, those skilled in the art can combine, split and exchange the order of the above steps without departing from the basic principle of the present invention, so that The modified technical solution does not change the basic idea of the present invention, and therefore also falls within the protection scope of the present invention.

So far, the technical solutions of the present invention have been described with reference to the preferred embodiments shown in the accompanying drawings, however, those skilled in the art can easily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims (6)

1. A dehumidification control method of an air conditioning system with independent temperature and humidity control is characterized in that the air conditioning system comprises:

the heat exchange unit comprises a compressor, an outdoor heat exchanger, a first throttling element and an indoor heat exchanger which are connected through a refrigerant pipe, wherein the outdoor heat exchanger is provided with an outer fan, and the indoor heat exchanger is provided with an inner fan;

the dehumidification unit comprises a dehumidification box, a solid adsorption component and a reduction component, wherein the dehumidification box is provided with a dehumidification air inlet, a dehumidification air outlet, a reduction air inlet and a reduction air outlet which can be opened and closed, a dehumidification fan is arranged at the dehumidification air inlet or the dehumidification air outlet, a reduction fan is arranged at the reduction air inlet or the reduction air outlet, the solid adsorption component is fixedly arranged in the dehumidification box, the reduction component comprises a reduction coil pipe, the reduction coil pipe is coiled on the solid adsorption component, and a heat exchange medium is allowed to flow through the reduction coil pipe;

the dehumidification control method comprises the following steps:

when the dehumidification unit operates in a dehumidification mode, judging whether the solid adsorption component meets regeneration conditions;

when the regeneration condition is met, controlling the dehumidification unit to operate a regeneration mode;

when the dehumidification unit operates in a dehumidification mode, the dehumidification air inlet and the dehumidification air outlet are opened, and the dehumidification fan operates;

wherein the regeneration conditions comprise at least one of the following conditions:

the indoor environment humidity is greater than or equal to a first humidity threshold value, and the difference between the indoor environment humidity and the humidity of the solid adsorption component is smaller than a first preset difference;

the indoor ambient humidity is greater than or equal to the first humidity threshold and the rate of decrease of the indoor ambient humidity is less than a rate threshold;

the step of controlling the dehumidifying unit to operate the regeneration mode when the regeneration condition is satisfied further includes:

when the regeneration condition is met, acquiring the operation mode of the heat exchange unit;

judging whether the heat exchange unit operates in a refrigeration mode or not;

controlling the dehumidifying unit to operate the regeneration mode based on the determination result;

the gas vent of compressor is provided with first automatically controlled valve, reduction subassembly still includes:

the heat exchange device comprises a reduction water tank, wherein heat exchange liquid is stored in the reduction water tank, a first end and a second end of a reduction coil are respectively communicated with the reduction water tank, and a circulating pump is arranged on the reduction coil;

the heat exchange coil pipe is arranged in the reduction water tank in a coiling manner, the first end of the heat exchange coil pipe extends out of the reduction water tank and is communicated with the exhaust port of the compressor, and the second end of the heat exchange coil pipe extends out of the reduction water tank and is communicated with the inlet of the outdoor heat exchanger;

a second electrical valve disposed on the heat exchange coil and between the first end of the heat exchange coil and the reduction water tank;

a second throttling element disposed on the heat exchange coil between the reduction water tank and the second end of the heat exchange coil;

the first electric control valve is positioned on the refrigerant pipe between the first end and the second end of the heat exchange coil pipe;

the step of controlling the dehumidifying unit to operate the regeneration mode based on the determination result further includes:

when the heat exchange unit operates in a refrigeration mode, the reduction air inlet and the reduction air outlet are controlled to be opened, the dehumidification air inlet and the dehumidification air outlet are controlled to be closed, the reduction fan and the circulating pump are controlled to be opened, the dehumidification fan is controlled to be closed, and the second electric control valve is controlled to be opened, the first electric control valve is controlled to be closed, and the second throttling element is controlled to be fully opened;

the step of controlling the dehumidifying unit to operate the regeneration mode based on the determination result further includes:

when the heat exchange unit does not operate in a refrigeration mode, the reduction air inlet and the reduction air outlet are controlled to be opened, the dehumidification air inlet and the dehumidification air outlet are controlled to be closed, the compressor, the outer fan, the reduction fan and the circulating pump are controlled to be opened, the dehumidification fan is controlled to be closed, the second electric control valve is controlled to be opened, the first electric control valve is closed, the first throttling element is controlled to be fully opened, and the second throttling element is controlled to be opened to a set opening degree.

2. The dehumidification control method of an air conditioning system with independent temperature and humidity control according to claim 1, further comprising:

when the dehumidification unit runs in a regeneration mode, judging whether the dehumidification unit meets an exit condition;

and when the exit condition is met, controlling the dehumidification unit to exit the regeneration mode and continue to operate the dehumidification mode.

3. The dehumidification control method of an independent temperature and humidity control air conditioning system according to claim 2, wherein the exit condition comprises at least one of:

the difference between the indoor environment humidity and the humidity of the solid adsorption component is greater than or equal to a second preset difference;

the operation time of the regeneration mode reaches a first preset time.

4. The dehumidification control method of an air conditioning system with independent temperature and humidity control according to claim 1, further comprising:

acquiring the indoor environment humidity and the humidity of the solid adsorption component;

calculating a difference between the indoor ambient humidity and the humidity of the solid sorption assembly;

comparing the indoor environment humidity with a second humidity threshold value, and comparing the difference value with a third preset difference value;

selectively controlling the dehumidifying unit to operate a dehumidifying mode or a regenerating mode based on the comparison result.

5. The dehumidification control method of an independent temperature and humidity control air conditioning system according to claim 4, wherein the step of selectively controlling the dehumidification unit to operate in the dehumidification mode or the regeneration mode based on the comparison result further comprises:

when the indoor environment humidity is greater than or equal to a second humidity threshold value and the difference value is greater than or equal to a third preset difference value, controlling the dehumidification unit to operate the dehumidification mode;

when the indoor environment humidity is larger than or equal to a second humidity threshold value and the difference value is smaller than a third preset difference value, controlling the dehumidification unit to operate the regeneration mode firstly and then operate the dehumidification mode;

when the indoor environment humidity is smaller than a second humidity threshold value and the difference value is larger than or equal to a third preset difference value, controlling the dehumidification unit to keep the current state or only operate the regeneration mode;

wherein the second humidity threshold is greater than the first humidity threshold.

6. The dehumidification control method of an air conditioning system with independent temperature and humidity control according to claim 1, further comprising:

judging whether the dehumidification unit meets a stop condition;

when the stop condition is met, controlling the dehumidifying unit to stop running;

wherein the stop condition includes:

the indoor ambient humidity is less than a stop humidity threshold;

the indoor environment humidity is greater than or equal to the stop humidity threshold but smaller than the first humidity threshold, and the running time of the dehumidification unit reaches a second preset time.

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