Air conditioning unit and control method thereof

Abstract

The present invention relates to the technical field of water-cooled air conditioners, and specifically provides an air conditioning unit and a control method thereof. The purpose is to solve the problem that the control method of the existing air conditioning unit does not make corresponding corrections based on the water volume of different units, resulting in non-optimal control. To this end, the air conditioning unit of the present invention includes a refrigerant circulation loop and a water circulation loop, and the refrigerant circulation loop is sequentially provided with an evaporator, a compressor, a condenser and a throttling component, and the water circulation loop is configured to be able to exchange heat with at least one of the evaporator and the condenser. The control method of the present invention includes: in the debugging stage of the air conditioning unit, the amount of circulating water in the water circulation loop is obtained, and based on a preset response speed, the response speed of the air conditioning unit is determined according to the comparison result of the circulating water volume in the water circulation loop and the preset circulating water volume; wherein the preset circulating water volume and the preset response speed are storage values ​​with a corresponding relationship, thereby effectively improving the control stability of the air conditioning unit.

Description

Technical Field

[0001] The invention relates to the technical field of water-cooled air conditioners, and specifically provides an air conditioning unit and a control method thereof. Background Art

[0002] With the continuous development of air-conditioning technology, air-conditioning types for different application scenarios have also emerged. For large heat exchange places, ordinary air-cooled air conditioners can no longer meet the heat exchange needs of users, so water-cooled air conditioners are widely used. Water-cooled air conditioners control the host with the refrigerant circulation system as the center, which is controllable, reliable and trustworthy. In the host control process of water-cooled air conditioners, the control information of the fan disk is not collected, but the control needs can still be met. This is because the water circulation system has sufficient heat capacity to meet the control of the inlet and outlet water temperatures. In engineering, there is a minimum limit (allowed during the startup process) and a maximum limit (condenser and pipeline pressure limit). Specifically, since the host test before leaving the factory is based on a certain amount of water set in the water circulation system, in the actual application process, the on-site installation water volume of different application scenarios is uncertain. The set water volume may be the same as the water volume during the test, but most scenarios are different from the water volume during the test. In this case, applying the control method during the test will inevitably lead to insufficient control utilization.

[0003] Accordingly, the art requires a new air conditioning unit and a control method thereof to solve the above technical problems. Summary of the invention

[0004] The present invention aims to solve the above technical problem, that is, to solve the problem that the control method of the existing air-conditioning unit does not make corresponding corrections based on the water volume of different units, resulting in non-optimal control.

[0005] In a first aspect, the present invention provides a control method for an air conditioning unit, wherein the air conditioning unit comprises a refrigerant circulation loop and a water circulation loop, wherein an evaporator, a compressor, a condenser and a throttling component are sequentially arranged on the refrigerant circulation loop, and the water circulation loop is configured to be able to exchange heat with at least one of the evaporator and the condenser.

[0006] The control method comprises:

[0007] During the commissioning phase of the air conditioning unit, obtaining the amount of circulating water in the water circulation loop;

[0008] comparing the amount of circulating water in the water circulation loop with a preset amount of circulating water;

[0009] Based on a preset response speed, determining a response speed of the air conditioning unit according to a comparison result of the circulating water volume in the water circulation loop and the preset circulating water volume;

[0010] Wherein, the preset circulating water volume and the preset response speed are storage values ​​having a corresponding relationship.

[0011] In the preferred technical solution of the control method of the above air-conditioning unit, the step of "determining the response speed of the air-conditioning unit based on the preset response speed and according to the comparison result of the circulating water volume in the water circulation loop and the preset circulating water volume" specifically includes:

[0012] Based on the preset response speed, the response speed of the air conditioning unit is determined according to the ratio of the circulating water volume in the water circulation loop to the preset circulating water volume.

[0013] In the preferred technical solution of the control method of the above air-conditioning unit, the preset response speed is set based on the time variation, and the step of "determining the response speed of the air-conditioning unit based on the preset response speed and according to the ratio of the circulating water volume in the water circulation loop to the preset circulating water volume" specifically includes:

[0014] The preset response speed is set based on the preset time change, and the response speed of the air conditioning unit that changes with time is determined according to the ratio of the circulating water volume in the water circulation loop to the preset circulating water volume.

[0015] In the preferred technical solution of the control method of the above air-conditioning unit, the preset response speed is set based on the parameter change amplitude, and the step of "determining the response speed of the air-conditioning unit based on the preset response speed and according to the ratio of the circulating water volume in the water circulation loop to the preset circulating water volume" specifically includes:

[0016] Based on the preset response speed set by the preset parameter change amplitude, the response speed of the air-conditioning unit with the amplitude change is determined according to the ratio of the circulating water volume in the water circulation loop to the preset circulating water volume.

[0017] In a preferred technical solution of the control method of the above air-conditioning unit, the water circulation loop is a chilled water circulation loop, and the chilled water circulation loop is configured to be able to exchange heat with the evaporator.

[0018] In the preferred technical solution of the control method of the above air-conditioning unit, the step of "determining the response speed of the air-conditioning unit based on the preset response speed and according to the comparison result of the circulating water volume in the water circulation loop and the preset circulating water volume" also includes:

[0019] Based on the preset response speed, the response speed of the refrigerant circulation circuit is determined according to a comparison result of the circulating water volume in the water circulation circuit and the preset circulating water volume.

[0020] In a preferred technical solution of the control method of the above-mentioned air-conditioning unit, the water circulation loop is a cooling water circulation loop, and the cooling water circulation loop is configured to be able to exchange heat with the condenser.

[0021] In the preferred technical solution of the control method of the above air-conditioning unit, the step of "determining the response speed of the air-conditioning unit based on the preset response speed and according to the comparison result of the circulating water volume in the water circulation loop and the preset circulating water volume" also includes:

[0022] Based on the preset response speed, the response speed of the cooling water circulation loop is determined according to a comparison result between the circulating water volume in the water circulation loop and the preset circulating water volume.

[0023] In the preferred technical solution of the control method of the air-conditioning unit, a cooling water circulation pump is provided on the cooling water circulation loop, and a cooling fan is provided near the cooling water circulation loop, and the step of "determining the response speed of the cooling water circulation loop based on the preset response speed and according to the comparison result of the circulating water volume in the water circulation loop and the preset circulating water volume" specifically includes:

[0024] Based on the preset response speed, the response speed of the cooling water circulation pump and / or the cooling fan is determined according to a comparison result of the circulating water volume in the water circulation loop and the preset circulating water volume.

[0025] In a second aspect, the present invention further provides an air-conditioning unit, comprising a controller, and the controller is capable of executing the control method described in any one of the above-mentioned preferred technical solutions.

[0026] In the case of adopting the above technical solution, the air conditioning unit of the present invention includes a refrigerant circulation loop and a water circulation loop, and the refrigerant circulation loop is sequentially provided with an evaporator, a compressor, a condenser and a throttling component, and the water circulation loop is configured to be able to exchange heat with at least one of the evaporator and the condenser. The control method of the present invention includes: in the debugging stage of the air conditioning unit, obtaining the circulating water volume in the water circulation loop; comparing the circulating water volume in the water circulation loop with the preset circulating water volume; based on the preset response speed, according to the comparison result of the circulating water volume in the water circulation loop and the preset circulating water volume, determining the response speed of the air conditioning unit; wherein the preset circulating water volume and the preset response speed are storage values ​​with a corresponding relationship. Based on the above control method, the air conditioning unit of the present invention can adjust its response speed accordingly based on different circulating water volumes, so that the operating parameters set in the debugging stage can be adaptively applied to different units after adjustment. Based on this, the air conditioning unit can provide faster decision-making to ensure the response speed of the host, and can also better realize the energy-saving control of the compressor, thereby realizing minimized protection, thereby effectively improving the control stability of the air conditioning unit.

[0027] Further preferably, the present invention can determine the response speed of the air-conditioning unit based on the preset response speed and according to the ratio of the circulating water volume in the water circulation loop to the preset circulating water volume. Based on the introduction of the ratio of the circulating water volume in the water circulation loop to the preset circulating water volume, the correction process can be processed in a more quantitative manner, thereby effectively improving the correction effect, and further effectively achieving the purpose of improving control stability.

[0028] Further preferably, the preset response speed described in the present invention is set based on the time change, so that the present invention can determine the response speed of the air-conditioning unit that changes with time based on the preset response speed set based on the preset time change, according to the ratio of the circulating water volume in the water circulation loop to the preset circulating water volume, so as to effectively correct the operation mode of the air-conditioning unit from the dimension of time change, thereby ensuring that its control stability is improved.

[0029] Further preferably, the preset response speed described in the present invention is set based on the parameter change amplitude, so that the present invention can determine the response speed of the air-conditioning unit with the amplitude change based on the preset response speed set based on the preset parameter change amplitude, according to the ratio of the circulating water volume in the water circulation loop to the preset circulating water volume, so as to effectively correct the operation mode of the air-conditioning unit from the dimension of amplitude change, thereby ensuring that its control stability is improved.

[0030] In addition, it is further preferred that the water circulation circuit described in the present invention is a chilled water circulation circuit, and the chilled water circulation circuit is configured to exchange heat with the evaporator. The control method of the present invention can determine the response speed of the refrigerant circulation circuit based on the preset response speed and according to the comparison result of the circulating water volume in the water circulation circuit and the preset circulating water volume, so as to effectively guarantee the indoor heating demand and thereby maximize the user's heat exchange experience.

[0031] In addition, it is further preferred that the water circulation loop described in the present invention is a cooling water circulation loop, and the cooling water circulation loop is configured to exchange heat with the condenser. The control method of the present invention can determine the response speed of the cooling water circulation loop based on the preset response speed and according to the comparison result of the circulating water volume in the water circulation loop and the preset circulating water volume, so as to effectively ensure that the cooling water circulation loop can help the refrigerant circulation loop to better dissipate heat, thereby further improving the control stability of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0033] Figure 1 is a schematic structural diagram of a refrigerant circulation circuit of an air-conditioning unit of the present invention;

[0034] Figure 2 is a schematic structural diagram of a chilled water circulation circuit of an air-conditioning unit of the present invention;

[0035] Figure 3 It is a logic relationship diagram of the control method of the present invention;

[0036] Figure 4 It is a flow chart of the main steps of the control method of the present invention;

[0037] Reference numerals:

[0038] 11. refrigerant circulation circuit; 111. evaporator; 112. compressor; 113. condenser; 114. throttling component;

[0039] 12. Chilled water circulation loop; 121. Fan disk; 122. Chilled water circulation pump; 123. Chilled water outlet temperature sensor; 124. Chilled water return temperature sensor; 125. Target flow switch;

[0040] 13. Cooling water circulation loop. DETAILED DESCRIPTION

[0041] The 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 principles of the present invention and are not intended to limit the protection scope of the present invention. Those skilled in the art can make adjustments to them as needed to adapt to specific application occasions. For example, the air conditioning unit of the present invention can be used in shopping malls as well as in industrial production. Such changes in the application objects do not deviate from the basic principles of the present invention and belong to the protection scope of the present invention.

[0042] It should be noted that, in the description of the preferred embodiment, unless otherwise clearly specified and limited, the terms "connected", "connected", etc. should be understood in a broad sense. For example, it can be directly connected, indirectly connected through an intermediate medium, or connected internally between two elements. Therefore, it should not be understood as a limitation on the present invention.

[0043] In addition, it should be noted that in the description of the present invention, although the various steps of the control method of the present invention are described in this application in a specific order, these orders are not restrictive. Without departing from the basic principles of the present invention, those skilled in the art can perform the steps in a different order.

[0044] See first Figure 1 , which is a schematic diagram of the structure of the refrigerant circulation circuit of the air-conditioning unit of the present invention. Figure 1 As shown, the air conditioning unit of the present invention includes a refrigerant circulation loop 11 and an evaporator 111, a compressor 112, a condenser 113 and a throttling component 114 arranged in sequence on the refrigerant circulation loop 11. Of course, it can be understood that other heat exchange components can also be arranged on the refrigerant circulation loop 11. This is not restrictive, and those skilled in the art can select the types of the evaporator 111, the compressor 112, the condenser 113 and the throttling component 114 according to actual use requirements. For example, the throttling component 114 can be an electronic expansion valve or a capillary tube. The refrigerant in the refrigerant circulation loop 11 is continuously converted between the evaporator 111 and the condenser 113 to achieve heat exchange. During the operation of the unit, the control of the refrigerant circulation loop 11 can be achieved by controlling the compressor 112 and the throttling component 114. It should be noted that the present invention does not impose any restrictions on the specific structure of the refrigerant circulation loop 11, and those skilled in the art can set it according to actual use requirements.

[0045] Furthermore, the air conditioning unit of the present invention further includes a chilled water circulation loop 12 and a cooling water circulation loop 13, wherein the chilled water circulation loop 12 is configured to be able to exchange heat with the evaporator 111, and the cooling water circulation loop 13 is configured to be able to exchange heat with the condenser 113. It should be noted that, although the water circulation loop in the present preferred embodiment includes both the chilled water circulation loop 12 and the cooling water circulation loop 13, the water circulation loop can obviously also include only one of the chilled water circulation loop 12 and the cooling water circulation loop 13; and it should also be noted that the present invention does not impose any restrictions on the specific structures of the chilled water circulation loop 12 and the cooling water circulation loop 13, the specific heat exchange method between the chilled water circulation loop 12 and the evaporator 111, and the specific heat exchange method between the cooling water circulation loop 13 and the condenser 113, and those skilled in the art can set them by themselves according to actual use requirements.

[0046] Next Read Figure 2 , which is a schematic diagram of the structure of the chilled water circulation circuit of the air conditioning unit of the present invention. Figure 2 As shown, a plurality of air discs 121 are arranged near the chilled water circulation loop 12 of the present invention to enable better heat exchange. Of course, the present invention does not impose any restrictions on the specific number of air discs 121, and those skilled in the art can set them by themselves according to actual use requirements, and the plurality of air discs 121 can be arranged in different spaces respectively, or in the same space, and the present invention does not impose any restrictions on this. A chilled water circulation pump 122 and a target flow switch 125 are also arranged on the chilled water circulation loop 12 to ensure the normal circulation of chilled water. Of course, the present invention does not impose any restrictions on the arrangement positions of the chilled water circulation pump 122 and the target flow switch 125, and those skilled in the art can set them by themselves according to actual use requirements. In addition, a chilled water outlet temperature sensor 123 and a chilled water return temperature sensor 124 are also arranged on the chilled water circulation loop 12, and the chilled water outlet temperature sensor 123 and the chilled water return temperature sensor 124 are respectively arranged at both ends of the evaporator 111, so as to more accurately measure the outlet water temperature and the return water temperature. It should be noted that the present invention does not impose any restrictions on the specific types, locations and quantities of the chilled water circulation pump 122, the chilled water outlet temperature sensor 123, the chilled water return temperature sensor 124 and the target flow switch 125, and those skilled in the art can set them according to actual usage requirements.

[0047] In addition, except that the cooling water circulation loop 13 is usually not provided with a fan disk, other structures are similar to those of the freezing water circulation loop 12, so they are not described here in detail.

[0048] In addition, the air conditioning unit further includes a controller, which can obtain detection information of each sensor and can also control the operation of the air conditioning unit, for example, the operating frequency of the compressor 112, the opening of the throttling member 114, etc., which are not restrictive. It can be understood by those skilled in the art that the present invention does not impose any restrictions on the specific structure and model of the controller, and the controller can be either the original controller of the air conditioning unit or a controller separately set for executing the control method of the present invention. Those skilled in the art can set the structure and model of the controller according to actual use requirements.

[0049] Next Read Figure 3 , which is a logical relationship diagram of the control method of the present invention. Figure 3 As shown, for the control of the water-cooled air-conditioning unit, the target outlet water temperature Ts of the chilled water circulation loop 12 is usually set first, and then the heat exchange capacity of the refrigerant circulation loop 11 is controlled accordingly (for example, by adjusting the power of the compressor 112 or the opening of the throttling component 114), and the refrigerant system is controlled by changing the control instructions; based on the control of the refrigerant system, the refrigerant system will generate corresponding heat, and the heat generated by the refrigerant system will be delivered to the water circulation loop. During the delivery process, a part of the heat will inevitably be leaked, that is, the part that is not delivered to the water circulation loop and is lost. After heat exchange, the temperature of the heat-exchanged water will be output, that is, the outlet water temperature of the chilled water, thereby achieving heat exchange.

[0050] Based on the above control logic, the system action formula can be derived based on the parameters involved in the above control logic:

[0051]

[0052] Among them, T i is the outlet water temperature of the water circulation loop, t is the time, C P is the specific heat of circulating water, M A is the quality of circulating water, Q W is the heat generated by the refrigerant system, Q L is the leakage heat in the heat exchange process, k is the correction system, T o The outside temperature.

[0053] Based on the above formula, it can be seen that when the quality of circulating water becomes a variable, in order to ensure the heat exchange effect of the unit, the heat generated by the refrigerant system also changes accordingly. In other words, based on different installation sites, the amount of installation water required for each air-conditioning unit is uncertain, and the existing control method does not consider the corresponding configuration based on different water volumes. Therefore, the control method tested before leaving the factory is used, which is prone to insufficient control utilization.

[0054] Based on this, the control method of the present invention specifically considers the quality M of the circulating water A Set as constant parameters and substitute them into the control scheme so that the constant parameters M can be adjusted accordingly based on the installation configuration of different scenarios A , thereby optimizing the control logic and improving control stability to the greatest extent.

[0055] Specifically, see Figure 4 , which is a flow chart of the main steps of the control method of the present invention. Figure 4 As shown, based on the air conditioning unit described in the above embodiment, the control method of the present invention mainly includes the following steps:

[0056] S1: During the commissioning phase of the air conditioning unit, the amount of circulating water in the water circulation loop is obtained;

[0057] S2: comparing the circulating water volume in the water circulation loop with the preset circulating water volume;

[0058] S3: Based on the preset response speed, the response speed of the air conditioning unit is determined according to a comparison result between the circulating water volume in the water circulation loop and the preset circulating water volume.

[0059] Further, in step S1, during the debugging stage of the air-conditioning unit, it can be understood that the debugging stage mentioned here refers to the debugging stage in which the air-conditioning unit has been installed on site but not officially used, rather than the debugging stage before leaving the factory. The amount of circulating water in the water circulation loop is obtained. The water circulation loop described here can be either a chilled water circulation loop 12 or a cooling water circulation loop 13, as long as corresponding control is performed later. In addition, it should be noted that the present invention does not impose any restrictions on the specific method of obtaining the amount of circulating water in the water circulation loop. Those skilled in the art can set it according to actual use requirements, as long as the actual amount of circulating water can be obtained.

[0060] Furthermore, in step S2, the amount of circulating water in the water circulation loop is compared with the preset amount of circulating water. It can be understood that the preset amount of circulating water mentioned here is the amount of circulating water used when the air-conditioning unit is tested before leaving the factory. As a preferred setting, the specific method of comparing the amount of circulating water in the water circulation loop with the preset amount of circulating water is to compare the ratio of the amount of circulating water in the water circulation loop to the preset amount of circulating water, so that the subsequent steps can be controlled accordingly based on the ratio. Of course, it should also be noted that the present invention does not impose any restrictions on the specific comparison of the amount of circulating water in the water circulation loop with the preset amount of circulating water, and those skilled in the art can set it according to actual use requirements.

[0061] Finally, in step S3, based on the preset response speed, the response speed of the air-conditioning unit is determined according to the comparison result between the circulating water volume in the water circulation loop and the preset circulating water volume. It can be understood that the preset circulating water volume and the preset response speed are storage values ​​with a corresponding relationship. Specifically, before the air-conditioning unit leaves the factory, the technicians will conduct corresponding tests on the operation logic stored in it. After continuous testing and self-learning, the optimal operation logic can be formulated to achieve good control stability. Of course, the present invention does not impose any restrictions on this process. In this pre-shipment test process, the water volume in the water circulation loop configured by the air-conditioning unit is certain, and this water volume is the preset circulating water volume. Based on this circulating water volume, the technicians also set the optimal response speed of the air-conditioning unit corresponding to it. This optimal response speed tested before leaving the factory is the preset corresponding speed described in this step.

[0062] Based on the preferred setting method corresponding to step S2, the preferred setting method corresponding to step S3 is: based on the preset response speed, according to the ratio of the circulating water volume in the water circulation loop to the preset circulating water volume, the response speed of the air-conditioning unit is determined, that is, based on the ratio of the circulating water volume in the water circulation loop to the preset circulating water volume, the response speed of the air-conditioning unit is proportionally set to the preset response speed. It should be noted that the present invention does not impose any restrictions on the specific parameter type corresponding to the response speed described in this preferred embodiment, and those skilled in the art can set it according to actual use requirements.

[0063] Based on the parameter type selected dimension, as a preferred setting method, the preset response speed is set based on the time variation, and the preset response speed set based on the preset time variation is determined according to the ratio of the circulating water volume in the water circulation loop to the preset circulating water volume, and the response speed of the air-conditioning unit that changes with time is determined. Specifically, when the time variation accumulates to the preset value, a corresponding response is made. For example, before the factory test, the preset circulating water volume is 5 cubic meters and the preset response speed of the compressor 112 corresponding to it is once every 10 seconds. If the circulating water volume of the water circulation loop in the actual application scenario is 10 cubic meters, the response speed of the air-conditioning unit finally determined corresponds to the response speed of the compressor 112, which responds once every 5 seconds. Of course, this is only exemplary, and those skilled in the art can set the parameter type and its response speed corresponding to the response speed of the air-conditioning unit according to actual use requirements. For example, the response speed of the air-conditioning unit can also correspond to the time interval for each opening adjustment of the throttling component 114.

[0064] Based on the parameter type, the dimension is selected. As another preferred setting method, the preset response speed is set based on the parameter change amplitude. The preset response speed set based on the preset parameter change amplitude determines the response speed of the air-conditioning unit with the amplitude change according to the ratio of the circulating water volume in the water circulation loop to the preset circulating water volume. Specifically, when the parameter change amplitude accumulates to the preset value, a corresponding response is made. For example, before the factory test, the preset circulating water volume is 5 cubic meters and the corresponding preset response speed of the compressor 112 is once for every 10W consumed. If the circulating water volume of the water circulation loop in the actual application scenario is 10 cubic meters, the final response speed of the air-conditioning unit corresponds to the response speed of the compressor 112, which responds once for every 5W consumed. Of course, this is only exemplary, and those skilled in the art can set the parameter type and its response speed corresponding to the response speed of the air-conditioning unit according to actual use requirements.

[0065] Based on the dimension of actuator selection, as a preferred embodiment, when the water circulation loop is a chilled water circulation loop 12, based on the preset response speed, the response speed of the refrigerant circulation loop is determined according to the comparison result between the circulating water volume in the chilled water circulation loop 12 and the preset circulating water volume. In other words, when the control method of the present invention is applied to the chilled water circulation loop 12, the actuator that ultimately corresponds to it is the actuator set in the refrigerant circulation loop, for example, the response speed of the compressor 112; for another example, the response speed of the throttling component 114. Of course, this is not restrictive, and those skilled in the art can set it according to actual use requirements.

[0066] Based on the dimension of actuator selection, as another preferred embodiment, when the water circulation loop is a cooling water circulation loop 13, based on the preset response speed, the response speed of the cooling water circulation loop is determined according to the comparison result between the circulating water volume in the cooling water circulation loop 13 and the preset circulating water volume. In other words, when the control method of the present invention is applied to the cooling water circulation loop 13, the actuator that ultimately corresponds to it is the actuator set in the cooling water circulation loop 13, for example, the response speed of the cooling water circulation pump; for another example, the response speed of the cooling fan. Of course, this is not restrictive, and those skilled in the art can set it according to actual use requirements.

[0067] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to 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

1. A control method for an air conditioning unit, wherein the air conditioning unit comprises a refrigerant circulation loop and a water circulation loop, wherein the refrigerant circulation loop is sequentially provided with an evaporator, a compressor, a condenser and a throttling component, and wherein the water circulation loop is configured to be able to exchange heat with at least one of the evaporator and the condenser, wherein: The control method comprises: During the commissioning phase of the air conditioning unit, obtaining the amount of circulating water in the water circulation loop; comparing the amount of circulating water in the water circulation loop with a preset amount of circulating water; Based on a preset response speed, determining a response speed of the air conditioning unit according to a comparison result of the circulating water volume in the water circulation loop and the preset circulating water volume; Wherein, the preset circulating water volume and the preset response speed are storage values ​​having a corresponding relationship; The response speed is determined based on the time variation, and the air conditioning unit responds when the time variation accumulates to a preset value, or the response speed is determined based on the parameter variation amplitude, and the air conditioning unit responds when the parameter variation amplitude accumulates to a preset value.

2. The control method according to claim 1, characterized in that: The step of "determining the response speed of the air conditioning unit based on a preset response speed according to a comparison result of the circulating water volume in the water circulation loop and the preset circulating water volume" specifically includes: Based on the preset response speed, the response speed of the air conditioning unit is determined according to the ratio of the circulating water volume in the water circulation loop to the preset circulating water volume.

3. The control method according to claim 2, characterized in that: The preset response speed is set based on the time variation, and the step of "determining the response speed of the air conditioning unit based on the preset response speed and according to the ratio of the circulating water volume in the water circulation loop to the preset circulating water volume" specifically includes: The preset response speed is set based on the preset time change, and the response speed of the air conditioning unit that changes with time is determined according to the ratio of the circulating water volume in the water circulation loop to the preset circulating water volume.

4. The control method according to claim 2, characterized in that: The preset response speed is set based on the parameter change amplitude, and the step of "determining the response speed of the air conditioning unit based on the preset response speed and according to the ratio of the circulating water volume in the water circulation loop to the preset circulating water volume" specifically includes: Based on the preset response speed set by the preset parameter change amplitude, the response speed of the air-conditioning unit with the amplitude change is determined according to the ratio of the circulating water volume in the water circulation loop to the preset circulating water volume.

5. The control method according to any one of claims 1 to 4, characterized in that: The water circulation loop is a chilled water circulation loop, and the chilled water circulation loop is configured to be able to exchange heat with the evaporator.

6. The control method according to claim 5, characterized in that: The step of "determining the response speed of the air conditioning unit based on a preset response speed according to a comparison result of the circulating water volume in the water circulation loop and the preset circulating water volume" also includes: Based on the preset response speed, the response speed of the refrigerant circulation circuit is determined according to a comparison result of the circulating water volume in the water circulation circuit and the preset circulating water volume.

7. The control method according to any one of claims 1 to 4, characterized in that: The water circulation loop is a cooling water circulation loop, and the cooling water circulation loop is configured to be able to exchange heat with the condenser.

8. The control method according to claim 7, characterized in that: The step of "determining the response speed of the air conditioning unit based on a preset response speed according to a comparison result of the circulating water volume in the water circulation loop and the preset circulating water volume" also includes: Based on the preset response speed, the response speed of the cooling water circulation loop is determined according to a comparison result between the circulating water volume in the water circulation loop and the preset circulating water volume.

9. The control method according to claim 8, characterized in that: The cooling water circulation loop is provided with a cooling water circulation pump, and a cooling fan is provided near the cooling water circulation loop. The step of "determining the response speed of the cooling water circulation loop based on the preset response speed and according to the comparison result of the circulating water volume in the water circulation loop and the preset circulating water volume" specifically includes: Based on the preset response speed, the response speed of the cooling water circulation pump and / or the cooling fan is determined according to a comparison result of the circulating water volume in the water circulation loop and the preset circulating water volume.

10. An air conditioning unit, characterized in that: The air conditioning unit includes a controller capable of executing the control method according to any one of claims 1 to 9.

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