Air treatment system and control method of air treatment system

Abstract

The invention provides an air treatment system and a control method of the air treatment system. The load of the dehumidification module can be increased or the refrigerant circulation amount can be reduced under the condition that the temperature of the heat exchanger in the dehumidification module is too low, so that the capacity of indoor equipment and the capacity of an outdoor unit are kept balanced, the temperature of the first heat exchanger is increased, the freezing phenomenon and repeated start and stop actions are prevented, and the service life of the first heat exchanger is prolonged. And continuous dehumidification operation is ensured.

Description

Technical Field

[0001] The present application relates to the field of air treatment, and in particular to an air treatment system and a control method of the air treatment system. Background Art

[0002] With the continuous advancement of science and technology and the improvement of living standards, people have higher and higher requirements for living environment, among which indoor temperature and humidity are important indicators of living environment. For example, in rainy season or summer, the indoor air is relatively humid, and dehumidification equipment is needed to dehumidify the indoor air.

[0003] In the air handling system, when the dehumidification operation is performed, the moisture in the air is removed after the air passes through the evaporator installed in the room, and dry air is blown out to achieve the dehumidification effect.

[0004] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present application and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present application. Summary of the invention

[0005] The inventors found that in the existing air handling system, when performing dehumidification operation, the heat exchanger in the dehumidification device acts as an evaporator, and the heat exchanger in the outdoor unit acts as a condenser. In some application scenarios, only the dehumidification device is operated indoors. Then, even if the outdoor unit operates at the minimum capacity, it is impossible to maintain a balance between the capacity of the outdoor unit and the capacity of the indoor equipment including the indoor unit and the dehumidification device, that is, the load of the dehumidification device is lower than the capacity of the outdoor unit. In this case, the heat exchanger in the dehumidification device may freeze due to the low temperature, and in order to prevent freezing, it is necessary to repeatedly start and stop, so the dehumidification operation is difficult to continue.

[0006] In order to solve at least one of the above problems, the embodiments of the present application provide an air treatment system and a control method of the air treatment system. When the temperature of the heat exchanger in the dehumidification module is too low, the load of the dehumidification module can be increased or the refrigerant circulation volume can be reduced, so that the capacity of the indoor equipment and the capacity of the outdoor unit are balanced, thereby increasing the temperature of the first heat exchanger, preventing freezing and repeated start-stop actions, and ensuring the continuous operation of the dehumidification operation.

[0007] According to a first aspect of an embodiment of the present application, an air treatment system is provided, which includes: an air supply module, which is used to introduce air, and the air supply module has a fan; a dehumidification module, which is arranged at the output side of the air supply module, and is used to dehumidify the air output by the air supply module, and the dehumidification module has a first heat exchanger; and an outdoor unit, which has a compressor and a second heat exchanger, and the compressor, the second heat exchanger and the first heat exchanger are connected in sequence through a refrigerant pipeline. When dehumidification is performed using the dehumidification module, the first heat exchanger operates as an evaporator and the second heat exchanger operates as a condenser. When the temperature of the first heat exchanger is less than or equal to a preset value, the air volume of the fan of the air supply module is increased, or the refrigerant flow rate of the first heat exchanger flowing into the dehumidification module is reduced.

[0008] According to a second aspect of an embodiment of the present application, a control method for an air treatment system is provided, wherein the air treatment system comprises: an air supply module, which is used to introduce air, and the air supply module has a fan; a dehumidification module, which is arranged at the output side of the air supply module, and is used to dehumidify the air output by the air supply module, and the dehumidification module has a first heat exchanger; and an outdoor unit, which has a compressor and a second heat exchanger, and the compressor, the second heat exchanger and the first heat exchanger are connected in sequence through a refrigerant pipeline. The control method comprises: when dehumidification is performed using the dehumidification module, the first heat exchanger operates as an evaporator, and the second heat exchanger operates as a condenser, and when the temperature of the first heat exchanger is less than or equal to a preset value, the air volume of the fan of the air supply module is increased, or the refrigerant flow rate of the first heat exchanger flowing into the dehumidification module is reduced.

[0009] One of the beneficial effects of the embodiments of the present application is that in an air treatment system, when a dehumidification module is used for dehumidification, the first heat exchanger in the dehumidification module operates as an evaporator, and the second heat exchanger in the outdoor unit operates as a condenser. When the temperature of the first heat exchanger is less than or equal to a preset value, the current load of the dehumidification module is small, which may cause an imbalance with the capacity of the outdoor unit. By increasing the air volume of the fan of the air supply module, or by reducing the refrigerant flow rate of the first heat exchanger flowing into the dehumidification module to increase the temperature of the first heat exchanger, the load of the dehumidification module can be increased or the refrigerant circulation volume can be reduced when the temperature of the heat exchanger in the dehumidification module is too low, so that the capacity of the indoor equipment is balanced with that of the outdoor unit, thereby increasing the temperature of the first heat exchanger, preventing freezing and repeated start-stop actions, and ensuring the continuous dehumidification operation.

[0010] With reference to the following description and accompanying drawings, the specific embodiments of the present application are disclosed in detail, indicating the way in which the principles of the present application can be adopted. It should be understood that the embodiments of the present application are not limited in scope. Within the scope of the spirit and clauses of the appended claims, the embodiments of the present application include many changes, modifications and equivalents.

[0011] Feature information described and illustrated for one embodiment may be used in one or more other embodiments in the same or similar manner, combined with feature information in other embodiments, or replace feature information in other embodiments.

[0012] It should be emphasized that the term "include / comprises" when used herein refers to the existence of characteristic information, integers, steps or components, but does not exclude the existence or addition of one or more other characteristic information, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Many aspects of the present application may be better understood with reference to the following drawings. The components in the drawings are not drawn to scale, but are only for the purpose of illustrating the principles of the present application. For the convenience of illustrating and describing some parts of the present application, corresponding parts in the drawings may be enlarged or reduced. The elements and feature information described in one drawing or one embodiment of the present application may be combined with the elements and feature information shown in one or more other drawings or embodiments. In addition, in the drawings, similar reference numerals represent corresponding components in several drawings and may be used to indicate corresponding components used in more than one embodiment.

[0014] In the attached picture:

[0015] Figure 1 is a schematic diagram of an implementation of the air treatment system of Example 1 of the present application;

[0016] Figure 2 is a schematic diagram of an implementation of an air treatment system of Example 2 of the present application;

[0017] Figure 3 is a block diagram of an implementation of a control method for an air treatment system of Example 3 of the present application;

[0018] Figure 4 is a block diagram of another implementation of the control method of the air treatment system of Example 3 of the present application;

[0019] Figure 5 It is a flow chart of the control method of the air treatment system of Example 3 of the present application. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present application will be described below with reference to the accompanying drawings.

[0021] Example 1

[0022] Embodiment 1 of the present application provides an air treatment system.

[0023] Figure 1 Schematic diagram of an implementation of the air treatment system of Example 1 of the present application. Figure 1 In the figure, the solid lines between modules or devices represent refrigerant pipelines; in addition, the solid arrows indicate the flow direction of the refrigerant, and the hollow arrows indicate the flow direction of the air.

[0024] like Figure 1 As shown, the air handling system 100 includes:

[0025] An air supply module 110 is used to introduce air, and the air supply module 110 has a fan 111;

[0026] a dehumidification module 120 disposed at the output side of the air supply module 110 and configured to dehumidify the air output by the air supply module 110, wherein the dehumidification module 120 has a first heat exchanger 121; and

[0027] The outdoor unit 130 includes a compressor 131 and a second heat exchanger 132. The compressor 131, the second heat exchanger 132 and the first heat exchanger 121 are connected in sequence through a refrigerant pipeline.

[0028] In some embodiments, the air supply module 110 includes at least one of a fresh air processing device, a full heat exchange device (for example, with or without an internal circulation function), and a ventilation device (for example, with or without an internal circulation function).

[0029] like Figure 1 As shown, in the air supply module 110, OA represents an outdoor air inlet, EA represents an outdoor exhaust outlet, SA represents an indoor air supply outlet, and RA represents an indoor air return outlet.

[0030] The fan 111 is used to form an airflow, thereby introducing air into the room;

[0031] In addition, in some embodiments, the air supply module 110 may further include a fan 112 for exhausting air to the outdoors and a total heat exchanger 113 .

[0032] In some embodiments, the air supply module 110 has internal circulation and external circulation functions. For example, in the internal circulation mode, the air supply module 110 is used to introduce indoor air, and the air circulates between SA and RA; in the external circulation mode, the air supply module 110 is used to introduce outdoor air, and the air enters from OA and is discharged from SA, and then enters from RA and is discharged from EA;

[0033] In some embodiments, the air supply module 110 does not have an internal circulation function. For example, air enters from OA and is discharged from SA, and then enters from RA and is discharged from EA.

[0034] like Figure 1 As shown, the dehumidification module 120 is arranged at the output side of the air supply module 110, for example Figure 1 On the side where the SA is located, the dehumidification module 120 dehumidifies the air output by the air supply module 110 by passing through the first heat exchanger 121 with the refrigerant, and at this time, the first heat exchanger 121 operates as an evaporator.

[0035] like Figure 1 As shown, the outdoor unit 130 includes a compressor 131 and a second heat exchanger 132 . In addition, the outdoor unit 130 may further include a bypass circuit 133 , a liquid storage tank 134 , and a pressure sensor 135 .

[0036] The compressor 131, the second heat exchanger 132 and the first heat exchanger 121 are connected in sequence through a refrigerant pipeline, that is, starting from the output side of the compressor 131, the refrigerant flows through the compressor 131, the second heat exchanger 132 and the first heat exchanger 121 in sequence; the refrigerant flowing through the first heat exchanger 121 flows to the input side of the compressor 131 after passing through the liquid storage tank 134.

[0037] In some embodiments, Figure 1 As shown, the air handling system 100 further includes an indoor unit 140, and the indoor unit 140 includes a third heat exchanger 141, a refrigerant input side of the third heat exchanger 141 is connected to a refrigerant input side of the first heat exchanger 121, and a refrigerant output side of the third heat exchanger 141 is connected to a refrigerant output side of the first heat exchanger 121. In addition, the indoor unit 140 further includes a fan 142.

[0038] In some embodiments, the number of the indoor unit 140 can be set to one or more. When the indoor unit 140 is set to multiple, the refrigerant input side of the third heat exchanger 141 of each indoor unit 140 is respectively connected to the refrigerant input side of the first heat exchanger 121, and the refrigerant output side of the third heat exchanger 141 of each indoor unit 140 is respectively connected to the refrigerant output side of the first heat exchanger 121.

[0039] In some embodiments, the conditioning object of the air treatment system of the present application may include multiple indoor spaces, and the air output by the dehumidification module 120 after dehumidification may be respectively delivered to the multiple indoor spaces through air pipelines. In each indoor space, an indoor unit 140 is respectively arranged.

[0040] In addition, in some embodiments, the indoor unit 140 may be installed in part of the indoor space, while not installed in part of the indoor space.

[0041] In some embodiments, the air handling system 100 includes an air conditioning system. The air conditioning system may be a commercial air conditioning system or a residential air conditioning system.

[0042] In some embodiments, the air conditioning system may include at least one group of outdoor units and at least one indoor unit connected to each group of outdoor units. That is, the air conditioning system may include one or more groups of outdoor units, each group of outdoor units includes at least one outdoor unit; for a group of outdoor units, the group of outdoor units is connected to at least one indoor unit.

[0043] For example, an air conditioning system includes an outdoor unit and an indoor unit connected to the outdoor unit.

[0044] For example, the air conditioning system includes an outdoor unit and at least two indoor units connected to the outdoor unit.

[0045] For example, the air conditioning system includes at least two outdoor units and at least two indoor units connected to the at least two outdoor units.

[0046] For example, a group of outdoor units and at least one indoor unit connected to the group of outdoor units constitute a refrigerant system, or multiple groups of outdoor units and at least one indoor unit respectively connected to the multiple groups of outdoor units constitute multiple refrigerant systems. Thus, the air-conditioning system may include one refrigerant system or multiple refrigerant systems.

[0047] In some embodiments, the outdoor unit and the indoor unit may be air conditioning equipment of various models, types, forms, and capacities. For example, the indoor unit may be in the form of four-sided air outlet, two-sided air outlet, duct unit, ground air outlet, or skirting air outlet; the outdoor unit may be in the form of single fan upper air outlet, double fan upper air outlet, single fan front air outlet, or double fan front air outlet.

[0048] In one implementation of the embodiment of the present application, when dehumidification is performed using the dehumidification module 120, the first heat exchanger 121 of the dehumidification module 120 operates as an evaporator, and the second heat exchanger 132 of the outdoor unit 130 operates as a condenser. When the temperature of the first heat exchanger 121 is less than or equal to a preset value, the air volume of the fan 111 of the air supply module 110 is increased, for example, the air volume of the fan 111 is increased to above the preset air volume.

[0049] In this way, when the temperature of the first heat exchanger 121 is less than or equal to the preset value, that is, when the temperature of the first heat exchanger 121 is too low and may cause freezing, the air volume of the fan 111 of the air supply module 110 is increased, that is, the flow rate of air entering the dehumidification module 120 is increased, thereby increasing the load of the dehumidification module 120 and the evaporation capacity of the first heat exchanger 121, so that the temperature of the first heat exchanger 121 can be increased before freezing, thereby preventing freezing and repeated start-stop actions.

[0050] The preset value can be set according to actual needs, for example, the preset value is -5° C. In this way, the occurrence of increased noise caused by increased fan air volume is minimized.

[0051] For example, when the air handling system 100 is in refrigeration operation, and the compressor 131 has been started for a specified time (e.g., 8 minutes), the temperature of the first heat exchanger 121 is less than or equal to -5°C, and the air supply module 110 is not set to a low noise mode (silent mode), the air volume gear of the fan 111 of the air supply module 110 is adjusted from the current gear to a higher gear or the highest gear, such as a storm gear, so that the temperature can be quickly increased and freezing can be eliminated. In addition, in the internal circulation mode, the air volume gear of the fan 111 can be adjusted to a strong gear.

[0052] In some embodiments, the temperature of the first heat exchanger 121 is determined according to the temperature of the refrigerant pipeline of the first heat exchanger 121; for example, Figure 1 As shown, the temperature of the first heat exchanger 121 is determined according to the temperature of the refrigerant pipeline (at P1) of the first heat exchanger 121;

[0053] Alternatively, the temperature of the first heat exchanger 121 is determined according to the temperature of the air at the output side of the dehumidification module 120; for example, Figure 1 As shown, the temperature of the first heat exchanger 121 is determined according to the temperature of the air at the output side (at P2) of the dehumidification module 120;

[0054] Alternatively, the temperature of the first heat exchanger 121 is determined based on the current value of the fan 111 of the air supply module 110; for example, when the first heat exchanger 121 is frozen, the air volume decreases due to freezing, and the current value of the fan 111 increases due to the increase in resistance in the air passage.

[0055] In some embodiments, after the air volume of the fan 111 of the air supply module 110 is increased, when the temperature of the first heat exchanger 121 rises back to a value greater than the preset value, the air volume of the fan 111 is adjusted to the air volume before the increase; in this way, the air volume increase adjustment can be terminated in a timely manner without the risk of freezing, thereby reducing the impact of increased noise on users.

[0056] For example, when the air handling system 100 is not performing cooling operation, or when the air supply module 110 is set to low noise mode (silent mode), or when the temperature of the first heat exchanger 121 is greater than 0°C and the air volume of the fan 111 has been increased for 30 minutes and is not in anti-freeze control, the air volume of the fan 111 is adjusted to the air volume before the increase.

[0057] In another embodiment of the present application, when dehumidification is performed using the dehumidification module 120, the first heat exchanger 121 of the dehumidification module 120 operates as an evaporator, and the second heat exchanger 132 of the outdoor unit 130 operates as a condenser. When the temperature of the first heat exchanger 121 is less than or equal to a preset value, the refrigerant flow rate of the first heat exchanger 121 flowing into the dehumidification module 120 is reduced.

[0058] In this way, when the temperature of the first heat exchanger 121 is less than or equal to the preset value, that is, when the temperature of the first heat exchanger 121 is too low and may cause freezing, the refrigerant flow rate of the first heat exchanger 121 flowing into the dehumidification module 120 is reduced, that is, the refrigerant circulation volume is reduced, which can increase the temperature of the first heat exchanger 121 and prevent freezing and repeated start-stop actions.

[0059] In addition, increasing the temperature of the first heat exchanger 121 based on the control of the refrigerant flow rate can meet the user's requirements for low noise and avoid increasing noise.

[0060] For example, when the air supply module 110 is set to a low noise mode, when the temperature of the first heat exchanger 121 reaches below a preset value, the refrigerant flow rate of the first heat exchanger 121 flowing into the dehumidification module 120 is reduced.

[0061] In some embodiments, the refrigerant flow rate of the first heat exchanger 121 of the dehumidification module 120 is reduced by increasing the refrigerant flow rate of the bypass circuit 133 of the outdoor unit 130. In this way, the refrigerant flow rate of the first heat exchanger 121 can be effectively controlled through simple operations.

[0062] like Figure 1 As shown, the bypass loop 133 bypasses from between the first heat exchanger 121 and the second heat exchanger 132 to the input side of the compressor 131. The bypass loop 133 has a valve 136 for adjusting the refrigerant flow. By adjusting the valve 136, the refrigerant flow in the bypass loop 133 is increased, thereby reducing the refrigerant flow flowing into the first heat exchanger 121 of the dehumidification module 120.

[0063] For example, the valve 136 is a solenoid valve sv or an electric valve EVT.

[0064] In some embodiments, after increasing the air volume of the fan 111 of the air supply module 110, when the temperature of the first heat exchanger 121 rises back to a value greater than the preset value, the refrigerant flow rate of the first heat exchanger 121 flowing into the dehumidification module 120 is adjusted to a flow rate before the reduction; in this way, the reduction adjustment of the refrigerant flow rate can be terminated in a timely manner without the risk of freezing, thereby avoiding the impact on the dehumidification operation.

[0065] In some embodiments, Figure 1 As shown, the pressure sensor 135 is used to detect the pressure on the input side of the compressor 131. When the pressure detected by the pressure sensor 135 is higher than the preset pressure, the air volume of the fan 11 of the air supply module 110 is stopped from increasing, or the refrigerant flow rate of the first heat exchanger 121 of the dehumidification module 120 is stopped from decreasing. In this way, the safety of the system operation can be ensured.

[0066] In some embodiments, Figure 1 As shown, the air supply module 110 and the dehumidification module 120 are independently arranged. In addition, the control substrate of the air supply module 110 and the control substrate of the dehumidification module 120 are independently arranged and electrically connected. Through the linkage of the air supply module 110 and the dehumidification module 120, the temperature of the first heat exchanger 121 can be increased to prevent freezing and repeated start-stop actions.

[0067] In some embodiments, the air treatment system 100 also includes a control module, which is used to perform related controls, such as controlling the air volume of the fan 111 of the air supply module 110 and controlling the refrigerant flow rate flowing into the first heat exchanger 121 of the dehumidification module 120.

[0068] For example, the control module is set in the dehumidification module 120. When the temperature of the first heat exchanger 121 is less than or equal to a preset value, the control module generates a control instruction for adjusting the air volume and sends the control instruction to the air supply module 110. After receiving the instruction, the air supply module 110 adjusts the air volume of the fan 111.

[0069] For example, the control module is a control substrate of the dehumidification module 120 .

[0070] In some embodiments, the air treatment system 100 also includes at least one controller, for example, a controller corresponding to the indoor unit 140 and a controller connected to the air supply module 110, for example, the controller is at least one of a centralized controller, a wired controller and a remote control.

[0071] According to the above embodiment, in the air handling system, when the dehumidification module is used for dehumidification, the first heat exchanger in the dehumidification module operates as an evaporator, and the second heat exchanger in the outdoor unit operates as a condenser. When the temperature of the first heat exchanger is less than or equal to the preset value, the current load of the dehumidification module is small, which may cause an imbalance with the capacity of the outdoor unit. By increasing the air volume of the fan of the air supply module, or by reducing the refrigerant flow rate of the first heat exchanger flowing into the dehumidification module to increase the temperature of the first heat exchanger, the load of the dehumidification module can be increased or the refrigerant circulation volume can be reduced when the temperature of the heat exchanger in the dehumidification module is too low, so that the capacity of the indoor equipment is balanced with that of the outdoor unit, thereby increasing the temperature of the first heat exchanger, preventing freezing and repeated start and stop actions, and ensuring the continuous dehumidification operation.

[0072] Example 2

[0073] Embodiment 2 of the present application provides an air treatment system, which is similar to the air treatment system described in Embodiment 1. The difference from the air treatment system described in Embodiment 1 is that another heat exchanger is provided in the dehumidification module and the indoor unit.

[0074] Figure 2 Schematic diagram of an implementation of the air treatment system of Example 2 of the present application. Figure 2 As shown, the structure of the air treatment system 100' is mostly the same as that of the air treatment system 100 in Example 1. The difference from the air treatment system 100 is that the dehumidification module 120 further has a fourth heat exchanger 122, and the fourth heat exchanger 122 is arranged on the output side of the first heat exchanger 121. In addition, the indoor unit 140 may also have a fifth heat exchanger 143.

[0075] In some embodiments, the fourth heat exchanger 122 is a reheat heat exchanger for heating the dehumidified air, thereby preventing the temperature of the dehumidified air from decreasing and improving user comfort.

[0076] Similar to Example 1, when the temperature of the heat exchanger in the dehumidification module is too low, the load of the dehumidification module can be increased or the refrigerant circulation volume can be reduced, so that the capacity of the indoor equipment is balanced with the capacity of the outdoor unit, thereby increasing the temperature of the first heat exchanger, preventing freezing and repeated start-stop actions, and ensuring the continuous operation of the dehumidification operation. In addition, a reheat heat exchanger is provided on the output side of the first heat exchanger 121 to prevent the temperature of the air after dehumidification from dropping and improve user comfort.

[0077] Example 3

[0078] Embodiment 3 of the present application provides a control method for an air treatment system, wherein the air treatment system is the air treatment system described in Embodiment 1 or Embodiment 2. The specific structure of the air treatment system can be referred to the description in Embodiment 1 or Embodiment 2, and will not be repeated here.

[0079] Figure 3 is a block diagram of an implementation method of the air treatment system control method of Example 3 of the present application. Figure 3 As shown, the method includes:

[0080] Step 301: When the dehumidification module is used for dehumidification, when the temperature of the first heat exchanger is less than or equal to a preset value, the air volume of the fan of the air supply module is increased.

[0081] In some embodiments, Figure 3 As shown, before step 301, the method may further include:

[0082] Step 302: Determine the temperature of the first heat exchanger according to the temperature of the refrigerant pipeline of the first heat exchanger or the temperature of the air at the output side of the dehumidification module or the current value of the fan of the air supply module;

[0083] That is, the temperature of the first heat exchanger is determined through step 302, so as to provide a basis for determining whether the temperature of the first heat exchanger is less than or equal to a preset value in step 301.

[0084] In some embodiments, Figure 3 As shown, after step 301, the method may further include:

[0085] Step 303: After the air volume of the fan of the air supply module is increased, when the temperature of the first heat exchanger rises back to a value greater than the preset value, the air volume of the fan is adjusted to the air volume before the increase.

[0086] In some embodiments, Figure 3 As shown, after step 301, the method may further include:

[0087] Step 304: When the pressure detected by the pressure sensor is higher than the preset pressure, stop increasing the air volume of the fan of the air supply module.

[0088] exist Figure 3 In the embodiment, steps 302-304 are optional steps.

[0089] Figure 4 is a block diagram of another implementation of the control method of the air treatment system of Example 3 of the present application. Figure 4 As shown, the method includes:

[0090] Step 401: When the dehumidification module is used for dehumidification, when the temperature of the first heat exchanger is less than or equal to a preset value, the refrigerant flow rate of the first heat exchanger flowing into the dehumidification module is reduced.

[0091] In some embodiments, Figure 3 As shown, before step 301, the method may further include:

[0092] Step 402: Determine the temperature of the first heat exchanger according to the temperature of the refrigerant pipeline of the first heat exchanger or the temperature of the air at the output side of the dehumidification module or the current value of the fan of the air supply module;

[0093] That is, the temperature of the first heat exchanger is determined through step 402, so as to provide a basis for determining whether the temperature of the first heat exchanger is less than or equal to a preset value in step 401.

[0094] In some embodiments, Figure 4 As shown, after step 401, the method may further include:

[0095] Step 403: When the temperature of the first heat exchanger rises back to a value greater than the preset value after the refrigerant flow rate flowing into the first heat exchanger is reduced, the refrigerant flow rate flowing into the first heat exchanger of the dehumidification module is adjusted to the flow rate before the reduction.

[0096] In some embodiments, Figure 4 As shown, after step 401, the method may further include:

[0097] Step 404: When the pressure detected by the pressure sensor is higher than a preset pressure, stop reducing the refrigerant flow rate flowing into the first heat exchanger of the dehumidification module.

[0098] exist Figure 4 In the embodiment, steps 402-404 are optional steps.

[0099] In some embodiments, when the temperature of the first heat exchanger is less than or equal to a preset value, when the silent mode is set, the refrigerant flow rate of the first heat exchanger flowing into the dehumidification module is reduced to reduce the refrigerant circulation volume; when the silent mode is set, the refrigerant flow rate of the first heat exchanger flowing into the dehumidification module can be reduced to reduce the refrigerant circulation volume, and when the temperature of the first heat exchanger is still less than or equal to the preset value after a certain period of time, the air volume of the fan of the air supply module is increased.

[0100] Figure 5 is a flow chart of a control method of an air treatment system according to Embodiment 3 of the present application. Figure 5 As shown, the method includes:

[0101] Step 501: determining the temperature of the first heat exchanger; for example, determining the temperature of the first heat exchanger according to the temperature of the refrigerant pipeline of the first heat exchanger or the temperature of the air at the output side of the dehumidification module or according to the current value of the fan of the air supply module;

[0102] Step 502: Determine whether the temperature of the first heat exchanger is less than or equal to a preset value; when the determination result is "yes", proceed to step 503; when the determination result is "no", return;

[0103] Step 503: Determine whether the silent mode is set, for example, whether the air exchange module is set to the silent mode by the user; when the judgment is "no", proceed to step 504; when the judgment is "yes", proceed to step 510;

[0104] Step 504: reducing the refrigerant flow rate flowing into the first heat exchanger of the dehumidification module;

[0105] Step 505: after a certain period of time, determine whether the temperature of the first heat exchanger is greater than a preset value; when the determination result is "yes", proceed to step 506, when the determination result is "no", proceed to step 507;

[0106] Step 506: adjusting the refrigerant flow rate flowing into the first heat exchanger of the dehumidification module to a previous flow rate that is reduced;

[0107] Step 507: increasing the air volume of the fan of the air supply module;

[0108] Step 508: after a certain period of time, determine whether the temperature of the first heat exchanger is greater than a preset value; when the determination result is "yes", proceed to step 509; when the determination result is "no", return;

[0109] Step 509: adjusting the air volume of the fan to the previous increased air volume, and adjusting the refrigerant flow rate of the first heat exchanger of the dehumidification module to the previous reduced flow rate;

[0110] Step 510: reducing the refrigerant flow rate flowing into the first heat exchanger of the dehumidification module;

[0111] Step 511: after a certain period of time, determine whether the temperature of the first heat exchanger is greater than a preset value; when the determination result is "yes", proceed to step 512; when the determination result is "no", return;

[0112] Step 512: Adjust the refrigerant flow rate flowing into the first heat exchanger of the dehumidification module to reduce the previous flow rate.

[0113] The specific implementation of the above steps can refer to the relevant records in Example 1, and will not be repeated here.

[0114] According to the above embodiment, in the air handling system, when the dehumidification module is used for dehumidification, the first heat exchanger in the dehumidification module operates as an evaporator, and the second heat exchanger in the outdoor unit operates as a condenser. When the temperature of the first heat exchanger is less than or equal to the preset value, the current load of the dehumidification module is small, which may cause an imbalance with the capacity of the outdoor unit. By increasing the air volume of the fan of the air supply module, or by reducing the refrigerant flow rate of the first heat exchanger flowing into the dehumidification module to increase the temperature of the first heat exchanger, the load of the dehumidification module can be increased or the refrigerant circulation volume can be reduced when the temperature of the heat exchanger in the dehumidification module is too low, so that the capacity of the indoor equipment is balanced with that of the outdoor unit, thereby increasing the temperature of the first heat exchanger, preventing freezing and repeated start and stop actions, and ensuring the continuous dehumidification operation.

[0115] The embodiment of the present application also provides a computer-readable program, wherein when the program is executed, the program enables the computer to execute the control method of the air treatment system described in Example 3.

[0116] An embodiment of the present application further provides a computer-readable storage medium, wherein the storage medium stores a computer program, and the computer-readable program enables a computer to execute the control method of the air treatment system described in Example 3.

[0117] The above devices and methods of the embodiments of the present application can be implemented by hardware, or by hardware combined with software. The present application relates to such a computer-readable program, which, when executed by a logic component, enables the logic component to implement the above devices or components, or enables the logic component to implement the above methods or steps.

[0118] The embodiments of the present application also relate to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

[0119] It should be noted that the limitations of the various steps involved in this application, without affecting the implementation of the specific scheme, are not deemed to limit the order of the steps. The steps written in front can be executed first, or later, or even simultaneously. As long as this scheme can be implemented, it should be regarded as belonging to the scope of protection of this application.

[0120] The present application is described above in conjunction with specific implementation methods, but it should be clear to those skilled in the art that these descriptions are exemplary and are not intended to limit the scope of protection of the present application. Those skilled in the art can make various modifications and variations to the present application based on the spirit and principles of the present application, and these modifications and variations are also within the scope of the present application.

Claims

1. An air treatment system, characterized in that: The air handling system comprises: An air supply module, which is used to introduce air, and the air supply module has a fan; a dehumidification module, which is arranged at the output side of the air supply module and is used to dehumidify the air output by the air supply module, and the dehumidification module has a first heat exchanger; and The outdoor unit comprises a compressor and a second heat exchanger, wherein the compressor, the second heat exchanger and the first heat exchanger are connected in sequence through a refrigerant pipeline. When dehumidification is performed using the dehumidification module, the first heat exchanger operates as an evaporator and the second heat exchanger operates as a condenser. When the temperature of the first heat exchanger is less than or equal to a preset value, the air volume of the fan of the air supply module is increased, or the refrigerant flow rate of the first heat exchanger flowing into the dehumidification module is reduced.

2. The air treatment system according to claim 1, characterized in that The temperature of the first heat exchanger is determined according to the temperature of the refrigerant pipeline of the first heat exchanger; or, The temperature of the first heat exchanger is determined according to the temperature of the air at the output side of the dehumidification module; or, The temperature of the first heat exchanger is determined according to a current value of the fan of the air supply module.

3. The air treatment system according to claim 1, characterized in that: The outdoor unit further comprises a bypass circuit, the bypass circuit bypasses from between the first heat exchanger and the second heat exchanger to the input side of the compressor, and the bypass circuit comprises a valve for adjusting the flow rate of the refrigerant. By adjusting the valve in the bypass circuit, the refrigerant flow in the bypass circuit is increased to reduce the refrigerant flow flowing into the first heat exchanger of the dehumidification module.

4. The air treatment system according to claim 1 or 3, characterized in that: In the case where the air supply module is set to a low noise mode, when the temperature of the first heat exchanger reaches or falls below a preset value, the flow rate of the refrigerant flowing into the first heat exchanger of the dehumidification module is reduced.

5. The air treatment system according to claim 1, characterized in that The air supply module and the dehumidification module are independently arranged. The control substrate of the air supply module and the control substrate of the dehumidification module are independently arranged and electrically connected to each other.

6. The air treatment system according to claim 1, characterized in that: When the air volume of the fan of the air supply module is increased and the temperature of the first heat exchanger rises back to a value greater than the preset value, the air volume of the fan is adjusted to the air volume before the increase; or, When the refrigerant flow rate of the first heat exchanger flowing into the dehumidification module is reduced and the temperature of the first heat exchanger rises back to a value greater than the preset value, the refrigerant flow rate of the first heat exchanger flowing into the dehumidification module is adjusted to the flow rate before the reduction.

7. The air treatment system according to claim 1, characterized in that The outdoor unit has a pressure sensor for detecting the pressure on the input side of the compressor. When the pressure detected by the pressure sensor is higher than a preset pressure, the air volume of the fan of the air supply module is stopped from increasing, or the refrigerant flow rate flowing into the first heat exchanger of the dehumidification module is stopped from reducing.

8. The air treatment system according to claim 1, characterized in that The air treatment system further comprises: an indoor unit having a third heat exchanger, The refrigerant input side of the third heat exchanger is connected to the refrigerant input side of the first heat exchanger, The refrigerant output side of the third heat exchanger is connected to the refrigerant output side of the first heat exchanger.

9. A control method for an air treatment system, the air treatment system comprising: An air supply module, which is used to introduce air, and the air supply module has a fan; a dehumidification module, which is arranged at the output side of the air supply module and is used to dehumidify the air output by the air supply module, and the dehumidification module has a first heat exchanger; and The outdoor unit comprises a compressor and a second heat exchanger, wherein the compressor, the second heat exchanger and the first heat exchanger are connected in sequence through a refrigerant pipeline. Characterized in that the control method comprises: When dehumidification is performed using the dehumidification module, the first heat exchanger operates as an evaporator and the second heat exchanger operates as a condenser. When the temperature of the first heat exchanger is less than or equal to a preset value, the air volume of the fan of the air supply module is increased, or the refrigerant flow rate of the first heat exchanger flowing into the dehumidification module is reduced.

10. The control method according to claim 9, characterized in that: The control method further comprises: determining the temperature of the first heat exchanger according to the temperature of the refrigerant pipeline of the first heat exchanger; or, Determine the temperature of the first heat exchanger according to the temperature of the air at the output side of the dehumidification module; or, The temperature of the first heat exchanger is determined according to the current value of the fan of the air supply module.

11. The control method according to claim 9, characterized in that: The outdoor unit further comprises a bypass circuit, the bypass circuit bypasses from between the first heat exchanger and the second heat exchanger to the input side of the compressor, and the bypass circuit comprises a valve for adjusting the flow rate of the refrigerant. By adjusting the valve in the bypass circuit, the refrigerant flow in the bypass circuit is increased to reduce the refrigerant flow flowing into the first heat exchanger of the dehumidification module.

12. The control method according to claim 9 or 11, characterized in that: In the case where the air supply module is set to a low noise mode, when the temperature of the first heat exchanger reaches or falls below a preset value, the flow rate of the refrigerant flowing into the first heat exchanger of the dehumidification module is reduced.

13. The control method according to claim 9, characterized in that: The control method further comprises: When the air volume of the fan of the air supply module is increased and the temperature of the first heat exchanger rises back to a value greater than the preset value, the air volume of the fan is adjusted to the air volume before the increase; or, When the refrigerant flow rate of the first heat exchanger flowing into the dehumidification module is reduced and the temperature of the first heat exchanger rises back to a value greater than the preset value, the refrigerant flow rate of the first heat exchanger flowing into the dehumidification module is adjusted to the flow rate before the reduction.

14. The control method according to claim 9, characterized in that: The outdoor unit has a pressure sensor for detecting the pressure on the input side of the compressor. The control method further comprises: When the pressure detected by the pressure sensor is higher than a preset pressure, the air volume of the fan of the air supply module is stopped from increasing, or the refrigerant flow rate flowing into the first heat exchanger of the dehumidification module is stopped from reducing.

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