CN119730169B

CN119730169B - Air conditioning system, control method, control device and storage medium

Info

Publication number: CN119730169B
Application number: CN202411897160.0A
Authority: CN
Inventors: 张衍俊; 张华冠; 董凯军; 颜利波; 孙钦; 管海凤
Original assignee: Guangzhou Institute of Energy Conversion of CAS; GD Midea Heating and Ventilating Equipment Co Ltd
Current assignee: Guangzhou Institute of Energy Conversion of CAS; GD Midea Heating and Ventilating Equipment Co Ltd
Priority date: 2024-12-20
Filing date: 2024-12-20
Publication date: 2025-12-05
Anticipated expiration: 2044-12-20
Also published as: CN119730169A

Abstract

The invention discloses an air conditioning system, a control method, a control device and a computer readable storage medium. The air conditioning system comprises an air conditioning refrigerating system, a cold accumulation heat exchange system and a cold accumulation heat exchange system, wherein the air conditioning refrigerating system comprises a refrigerant loop, a fluorine pump, a compressor and a first switching component, the first switching component is configured to control the fluorine pump and the compressor to be connected into the refrigerant loop and to be removed from the refrigerant loop, the cold accumulation heat exchange system comprises a cooling liquid loop, a cold accumulation device and a second switching component, the cooling liquid loop comprises a second heat exchanger, the second heat exchanger is used for exchanging heat with a load, the second switching component is connected with the cold accumulation device, the first heat exchanger and the second heat exchanger, the second switching component is configured to control the cold accumulation device to be connected into the cooling liquid loop and to be removed from the cooling liquid loop, and the cold accumulation device is configured to store cold of the first heat exchanger and supply cold to the second heat exchanger under the condition that the cold accumulation device is connected into the cooling liquid loop. In the air conditioning system, the energy consumption of the air conditioning system can be reduced to a certain extent.

Description

Air conditioning system, control method, control device and storage medium

Technical Field

The present invention relates to the field of air conditioning refrigeration technology, and in particular, to an air conditioning system, a control method, a control device, and a computer readable storage medium.

Background

As a core infrastructure for supporting rapid development of industries such as 5G, internet of things and artificial intelligence, data centers have shown explosive growth in recent years, however, energy consumption of data centers is also expanding continuously, and at present, energy consumption cost of data centers accounts for more than 60% of long-term operation cost of data centers, which becomes a bottleneck problem for restricting development of data center industries. Since 40% of the energy consumed by the data center is used for the operation of the refrigeration equipment, reducing the energy consumption of the refrigeration equipment is one of the most effective means of reducing the data center PUE (Power Usage Effectiveness).

Disclosure of Invention

Embodiments of the present invention provide an air conditioning system, a control method, a control device, and a computer-readable storage medium to solve at least one technical problem described above.

The air conditioning system comprises an air conditioning refrigerating system, a first switching component and a second switching component, wherein the air conditioning refrigerating system comprises a refrigerant loop, a fluorine pump, a compressor and the first switching component is connected with the refrigerant loop, the fluorine pump and the compressor and is configured to control the fluorine pump and the compressor to be connected into the refrigerant loop and to be removed from the refrigerant loop;

The cold accumulation heat exchange system comprises a cooling liquid loop, a cold accumulation device and a second switching assembly, wherein the cooling liquid loop and the refrigerant loop are connected through a first heat exchanger, the cooling liquid loop comprises a second heat exchanger which is used for exchanging heat with a load, the second switching assembly is connected with the cold accumulation device, the first heat exchanger and the second heat exchanger, and the second switching assembly is configured to control the cold accumulation device to be connected into the cooling liquid loop and to be removed from the cooling liquid loop;

The cold storage device is configured to store cold of the first heat exchanger and to supply cold to the second heat exchanger, with the cold storage device being connected to the coolant circuit.

In the air conditioning system, on one hand, the air conditioning refrigeration system can utilize the cooperation of the fluorine pump, the compressor and the first switching component to utilize the natural cold source and/or the mechanical cold source of the compressor to provide cold energy for the first heat exchanger, and on the other hand, the cold accumulation heat exchange system can utilize the cooperation of the cold accumulation device and the second switching component to enable the cold accumulation device to store the cold energy of the first heat exchanger and supply cold energy for the second heat exchanger, so that the energy consumption of the air conditioning system can be reduced to a certain extent.

In certain embodiments, the first switching assembly comprises a first valve and a second valve;

One end of the first valve is connected with an inlet of the fluorine pump, the other end of the first valve is connected with an outlet of the fluorine pump, and the first switching assembly is configured to enable the fluorine pump to move out of the refrigerant loop when the first valve is opened;

One end of the second valve is connected with the inlet of the compressor, the other end of the second valve is connected with the outlet of the compressor, and the first switching assembly is configured to enable the compressor to move out of the refrigerant loop when the second valve is opened, and enable the compressor to be connected into the refrigerant loop when the second valve is closed.

In certain embodiments, the second switching assembly comprises a first valve assembly and a second valve assembly, the first valve assembly being connected to the outlet of the first heat exchanger, the inlet of the cold storage device, and the inlet of the second heat exchanger, the first valve assembly being configured to control whether the coolant flowing from the first heat exchanger flows into the cold storage device;

The second valve assembly is connected with the outlet of the cold accumulation device, the inlet and outlet of the second heat exchanger and the inlet of the first heat exchanger, and the second valve assembly is configured to control whether cooling liquid flowing out of the cold accumulation device flows back to the first heat exchanger through the second heat exchanger.

In certain embodiments, the first valve assembly comprises a third valve connecting the outlet of the first heat exchanger and the inlet of the cold storage device and a fourth valve connecting the outlet of the first heat exchanger and the inlet of the second heat exchanger.

In certain embodiments, the second valve assembly comprises a fifth valve connecting the outlet of the cold storage device and the outlet of the second heat exchanger and a sixth valve connecting the outlet of the cold storage device and the inlet of the second heat exchanger.

In some embodiments, the air conditioning system has a cooling mode and a cooling+cold storage mode, in which the air conditioning system is configured to control the first and second switching components to cause one of a fluorine pump, a compressor, a fluorine pump+compressor, a cold storage device, a fluorine pump+cold storage device, a compressor+cold storage device, a fluorine pump+compressor+cold storage device to cool the second heat exchanger;

In the cooling and cold accumulation mode, the air conditioning system is configured to control the first switching assembly and the second switching assembly to enable one of cold sources to cool the second heat exchanger, namely a fluorine pump, a compressor, a fluorine pump and a compressor, and is configured to control the second switching assembly to enable the cold accumulation device to store the cold energy of the first heat exchanger.

In certain embodiments, when the air conditioning system is powered off, the air conditioning system is configured to control the first switching assembly and the second switching assembly to cause the cold storage device to cool the second heat exchanger;

When the air conditioning system is electrified, the air conditioning system is configured to control the first switching assembly and the second switching assembly to enable one of a fluorine pump, a compressor, a fluorine pump+compressor, a fluorine pump+cold storage device, a compressor+cold storage device and a fluorine pump+compressor+cold storage device to cool the second heat exchanger, and is configured to control the second switching assembly to enable the cold storage device to store the cooling capacity of the first heat exchanger.

In certain embodiments, in the case of T0-T1> T', the air conditioning system is configured to control the first and second switching assemblies to cause the fluorine pump to cool the second heat exchanger;

In the case of T "< T0-T1 +.t', the air conditioning system is configured to control the first and second switching assemblies to cause the fluorine pump + compressor to cool the second heat exchanger, the compressor operating at a first power;

Under the condition that T0-T1 is less than or equal to T', the air conditioning system is configured to control the first switching assembly and the second switching assembly to enable the compressor to cool the second heat exchanger, and the compressor operates at a second power;

wherein T0 is the temperature of the cooling liquid at the inlet of the second heat exchanger, T1 is the ambient temperature, T 'is a first set value, T' is a second set value, T '> T', and the first power is smaller than the second power.

In some embodiments, after cooling the fluorine pump to the second heat exchanger, if Tb < T0 ∈ta, the air conditioning system is configured to control the first and second switching components to continue cooling the fluorine pump to the second heat exchanger;

after cooling the fluorine pump to the second heat exchanger, if T0> Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to cause the fluorine pump + cold storage device to cool the second heat exchanger for a first preset period of time;

after the fluorine pump is enabled to cool the second heat exchanger, if T0 is less than or equal to Tb, entering the cooling and cold accumulation mode;

In the cooling and cold accumulation mode, the air conditioning system is configured to control the first switching assembly and the second switching assembly to enable the fluorine pump to cool the second heat exchanger, and control the second switching assembly to enable the cold accumulation device to store the cold energy of the first heat exchanger;

Wherein Ta is a first set temperature, tb is a second set temperature, and Ta > Tb.

In some embodiments, after cooling the fluorine pump to the second heat exchanger and controlling the second switching assembly to cause the cold storage device to store the cold of the first heat exchanger, if T0 is less than or equal to Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to continue cooling the fluorine pump to the second heat exchanger and to continue controlling the second switching assembly to cause the cold storage device to store the cold of the first heat exchanger;

After the fluorine pump is enabled to cool the second heat exchanger and the second switching assembly is controlled to enable the cold accumulation device to store the cooling capacity of the first heat exchanger, if T0> Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to enable the fluorine pump and the cold accumulation device to cool the second heat exchanger for the first preset duration.

In some embodiments, after cooling the fluorine pump + cold storage device for a first preset period of time for the second heat exchanger, if T0 is less than or equal to Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to continue cooling the fluorine pump + cold storage device for the second heat exchanger for the first preset period of time;

After the fluorine pump and the cold storage device are enabled to cool the second heat exchanger for a first preset time period, if T0> Ta, the air conditioning system is configured to control the first switching component and the second switching component to enable the fluorine pump and the compressor to cool the second heat exchanger, and the compressor operates at a first power.

In some embodiments, after cooling the fluorine pump+compressor to the second heat exchanger, the compressor is operated at a first power, if Tb < T0 +.ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to continue cooling the fluorine pump+compressor to the second heat exchanger, the compressor is operated at the first power;

After the fluorine pump+compressor is enabled to cool the second heat exchanger, and the compressor is operated at the first power, if T0> Ta, the air conditioning system is configured to control the first switching component and the second switching component to enable the fluorine pump+compressor+cold storage device to cool the second heat exchanger for a second preset duration;

After the fluorine pump is used for cooling the second heat exchanger, if T0 is less than or equal to Tb and T is less than or equal to T1 or T0 is less than or equal to Tb and T is more than or equal to T2 after the compressor is operated at the first power, entering the cooling and cold accumulation mode;

In the cooling and cold accumulation mode, the air conditioning system is configured to control the first switching assembly and the second switching assembly to enable the fluorine pump and the compressor to cool the second heat exchanger, and control the second switching assembly to enable the cold accumulation device to store the cooling capacity of the first heat exchanger;

wherein t is the current time, t1 is the first set time, t2 is the second set time, t e [0h,24h ], and t1< t2.

In some embodiments, after the fluorine pump+compressor is caused to cool the second heat exchanger and the second switching assembly is controlled to cause the cold storage device to store the cold of the first heat exchanger, if T0 is less than or equal to Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to continue to cause the fluorine pump+compressor to cool the second heat exchanger and to control the second switching assembly to continue to cause the cold storage device to store the cold of the first heat exchanger;

after the fluorine pump and the compressor are enabled to cool the second heat exchanger, and the second switching assembly is controlled to enable the cold accumulation device to store the cooling capacity of the first heat exchanger, if T0> Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to enable the fluorine pump, the compressor and the cold accumulation device to cool the second heat exchanger for a second preset duration.

In some embodiments, after the fluorine pump + compressor + cold storage device is allowed to cool the second heat exchanger for a second preset period of time, if T0 is less than or equal to Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to continue to allow the fluorine pump + compressor + cold storage device to cool the second heat exchanger for the second preset period of time;

After the fluorine pump, the compressor and the cold storage device are enabled to cool the second heat exchanger for a second preset time period, if T0> Ta, the air conditioning system is configured to control the first switching component and the second switching component to enable the compressor to cool the second heat exchanger, and the compressor operates at a second power.

In some embodiments, after cooling the compressor to the second heat exchanger, the air conditioning system is configured to control the first and second switching components to continue cooling the compressor to the second heat exchanger if Tb < T0 +.ta, the compressor operating at a second power;

After the compressor is cooled by the second heat exchanger, the compressor is operated at a second power, if T0> Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to cause the compressor + cold storage device to cool the second heat exchanger for a third preset period of time, the compressor is operated at a third power;

After the compressor is enabled to cool the second heat exchanger and the compressor is operated at the second power, if T0 is less than or equal to Tb and T is less than or equal to T1, or T0 is less than or equal to Tb and T is more than or equal to T2, entering the cooling+cold accumulation mode;

In the cooling and cold accumulation mode, the air conditioning system is configured to control the first switching assembly and the second switching assembly to enable the compressor to cool the second heat exchanger, and control the second switching assembly to enable the cold accumulation device to store the cold energy of the first heat exchanger;

In some embodiments, after cooling the compressor to the second heat exchanger and controlling the second switching assembly to cause the cold storage device to store the cold of the first heat exchanger, if T0 is less than or equal to Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to continue cooling the compressor to the second heat exchanger and to continue controlling the second switching assembly to cause the cold storage device to store the cold of the first heat exchanger;

After the compressor is enabled to cool the second heat exchanger and the second switching assembly is controlled to enable the cold accumulation device to store the cooling capacity of the first heat exchanger, if T0> Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to enable the compressor and the cold accumulation device to cool the second heat exchanger for a third preset duration, and the compressor is operated at a third power.

In some embodiments, after cooling the compressor + cold storage device for a third preset period of time for the second heat exchanger, the compressor is operated at a third power, if T0 is less than or equal to Ta, the air conditioning system is configured to control the first switching assembly and the second switching assembly to continue cooling the compressor + cold storage device for the second heat exchanger for the third preset period of time, the compressor being operated at the third power;

After the compressor and the cold accumulation device are enabled to cool the second heat exchanger for a third preset time period, if T0> Ta, the air conditioning system is configured to control the compressor to operate at a fourth power until T0 is less than or equal to Ta;

wherein the third power is less than the fourth power.

In some embodiments, after controlling the compressor to operate at a fourth power until T0 +.ta, if T0> Tb, the air conditioning system is configured to control the first and second switching assemblies to cool the compressor to the second heat exchanger, the compressor operating at a second power;

After controlling the compressor to run at the fourth power until T0 is less than or equal to Ta, if T0 is less than or equal to Tb and T is less than or equal to T1, or T0 is less than or equal to Tb and T is more than or equal to T2, entering the cooling+cold accumulation mode;

in the cooling and cold accumulation mode, the air conditioning system is configured to control the first switching assembly and the second switching assembly to enable the compressor to cool the second heat exchanger, and control the second switching assembly to enable the cold accumulation device to store the cold energy of the first heat exchanger.

The embodiment of the invention provides a control method of an air conditioning system, which comprises an air conditioning refrigerating system and a cold accumulation heat exchange system, wherein the air conditioning refrigerating system is connected with the cold accumulation heat exchange system through a first heat exchanger, the cold accumulation heat exchange system comprises a cold accumulation device and a second heat exchanger for exchanging heat with a load, the air conditioning refrigerating system comprises a natural cold source and a mechanical cold source, and the cold accumulation heat exchange system comprises a cold accumulation cold source;

The control method comprises the following steps:

According to the current signal, the temperature of the cooling liquid at the inlet of the second heat exchanger and the environmental temperature, controlling the air-conditioning refrigeration system and the cold accumulation heat exchange system to enable at least one of the natural cold source, the mechanical cold source and the cold accumulation cold source to cool the second heat exchanger, controlling the air-conditioning refrigeration system to enable at least one of the natural cold source and the mechanical cold source to cool the cold accumulation device, and controlling the cold accumulation heat exchange system to enable the cold accumulation cold source to cool the second heat exchanger.

In the control method, the air conditioner refrigerating system and the cold accumulation heat exchange system can utilize at least one of the natural cold source, the mechanical cold source and the cold accumulation cold source to cool the second heat exchanger, and utilize at least one of the natural cold source and the mechanical cold source to cool the cold accumulation device, so that flexible switching and efficient operation of multiple operation modes can be realized, and energy distribution and energy consumption reduction of the air conditioner system are facilitated.

In certain embodiments, the control method comprises:

When the current signal is normal, controlling the air conditioner refrigerating system and the cold accumulation heat exchange system to enable at least one of the natural cold source, the mechanical cold source and the cold accumulation cold source to cool the second heat exchanger and controlling the air conditioner refrigerating system to enable at least one of the natural cold source and the mechanical cold source to cool the cold accumulation device according to the temperature of cooling liquid at an inlet of the second heat exchanger and the ambient temperature;

And when the current signal is interrupted, controlling the cold accumulation heat exchange system to enable the cold accumulation cold source to cool the second heat exchanger.

In certain embodiments, the control method comprises:

Under the condition that T0-T1 is more than T', controlling the air conditioner refrigerating system to enable the natural cold source to cool the second heat exchanger;

under the condition that T "< T0-T1 is less than or equal to T', controlling the air conditioner refrigerating system to enable the natural cold source and the mechanical cold source to cool the second heat exchanger, and enabling the mechanical cold source to operate at first power;

under the condition that T0-T1 is less than or equal to T', controlling the air conditioning refrigeration system to enable the mechanical cold source to cool the second heat exchanger, wherein the mechanical cold source operates with second power;

In certain embodiments, the control method comprises:

After the natural cold source is used for cooling the second heat exchanger, if Tb is less than or equal to T0 and less than or equal to Ta, controlling the air conditioner refrigerating system to continuously enable the natural cold source to be used for cooling the second heat exchanger;

After the natural cold source is used for cooling the second heat exchanger, if T0> Ta, controlling the air conditioner refrigerating system and the cold accumulation heat exchange system to enable the natural cold source and the cold accumulation cold source to supply cold for the second heat exchanger for a first preset duration;

after the natural cold source is enabled to cool the second heat exchanger, if T0 is less than or equal to Tb, entering the cooling and cold accumulation mode;

In the cooling and cold accumulation mode, controlling the air conditioner refrigerating system to enable the natural cold source to cool the second heat exchanger, and controlling the air conditioner system to enable the natural cold source to cool the cold accumulation device;

In certain embodiments, the control method comprises:

After the natural cold source is enabled to cool the second heat exchanger and the air conditioning system is controlled to enable the natural cold source to cool the cold storage device, if T0 is less than or equal to Ta, the air conditioning refrigerating system is controlled to continuously enable the natural cold source to cool the second heat exchanger and the air conditioning system is controlled to continuously enable the natural cold source to cool the cold storage device;

After the natural cold source is enabled to cool the second heat exchanger, the air conditioning system is controlled to enable the natural cold source to cool the cold accumulation device, and if T0> Ta, the air conditioning refrigerating system and the cold accumulation heat exchange system are controlled to enable the natural cold source and the cold accumulation cold source to cool the second heat exchanger for a first preset duration.

In certain embodiments, the control method comprises:

After the natural cold source and the cold accumulation cold source supply cold for the second heat exchanger for a first preset time period, if T0 is less than or equal to Ta, controlling the air conditioner refrigerating system and the cold accumulation heat exchange system to continuously enable the natural cold source and the cold accumulation cold source to supply cold for the second heat exchanger for the first preset time period;

And after the natural cold source and the cold accumulation cold source supply cold for the second heat exchanger for a first preset time period, if T0> Ta, controlling the air conditioning refrigeration system to enable the natural cold source and the mechanical cold source to supply cold for the second heat exchanger, wherein the mechanical cold source operates with a first power.

In certain embodiments, the control method comprises:

After the natural cold source and the mechanical cold source supply cold for the second heat exchanger, if Tb is smaller than or equal to T0 and smaller than or equal to Ta after the mechanical cold source operates at the first power, controlling the air conditioner refrigerating system to continuously supply cold for the second heat exchanger by the natural cold source and the mechanical cold source, wherein the mechanical cold source operates at the first power;

After the natural cold source and the mechanical cold source supply cold for the second heat exchanger, if T0> Ta, controlling the air conditioner refrigerating system and the cold accumulation heat exchange system to supply cold for the second heat exchanger for a second preset time period after the mechanical cold source runs at the first power;

After the natural cold source and the mechanical cold source supply cold for the second heat exchanger, if T0 is less than or equal to Tb and T is less than or equal to T1 or T0 is less than or equal to Tb and T is more than or equal to T2 after the mechanical cold source runs at the first power, entering the cold supply and cold accumulation mode;

in the cooling and cold accumulation mode, controlling the air conditioning refrigeration system to enable the natural cold source and the mechanical cold source to cool the second heat exchanger, and controlling the air conditioning system to enable the natural cold source and the mechanical cold source to cool the cold accumulation device;

In certain embodiments, the control method comprises:

After the natural cold source and the mechanical cold source are enabled to cool the second heat exchanger, and the air conditioning system is controlled to enable the natural cold source and the mechanical cold source to cool the cold storage device, if T0 is less than or equal to Ta, the air conditioning refrigeration system is controlled to continuously enable the natural cold source and the mechanical cold source to cool the second heat exchanger, and the air conditioning system is controlled to continuously enable the natural cold source and the mechanical cold source to cool the cold storage device;

And after the natural cold source and the mechanical cold source supply cold for the second heat exchanger, controlling the air conditioning system to enable the natural cold source and the mechanical cold source to supply cold for the cold accumulation device, and controlling the air conditioning refrigeration system and the cold accumulation heat exchange system to enable the natural cold source, the mechanical cold source and the cold accumulation cold source to supply cold for the second heat exchanger for a second preset time period if T0> Ta.

In certain embodiments, the control method comprises:

After the natural cold source, the mechanical cold source and the cold accumulation cold source supply cold for the second heat exchanger for a second preset time period, if T0 is less than or equal to Ta, controlling the air conditioner refrigerating system and the cold accumulation heat exchange system to continuously enable the natural cold source, the mechanical cold source and the cold accumulation cold source to supply cold for the second heat exchanger for the second preset time period;

And after the natural cold source, the mechanical cold source and the cold accumulation cold source supply cold for the second heat exchanger for a second preset time period, if T0> Ta, controlling the air conditioner refrigerating system to enable the mechanical cold source to supply cold for the second heat exchanger, and enabling the mechanical cold source to operate with a second power.

In certain embodiments, the control method comprises:

After the mechanical cold source is enabled to cool the second heat exchanger, if Tb is less than or equal to T0 and less than or equal to Ta after the mechanical cold source is operated with second power, controlling the air conditioner refrigerating system to continuously enable the mechanical cold source to cool the second heat exchanger, wherein the mechanical cold source is operated with second power;

After the mechanical cold source is enabled to cool the second heat exchanger, and the mechanical cold source is operated at the second power, if T0> Ta, the air conditioner refrigerating system and the cold accumulation heat exchange system are controlled to enable the cold accumulation cold source and the mechanical cold source to cool the second heat exchanger for a third preset duration, and the mechanical cold source is operated at the third power;

After the mechanical cold source is enabled to cool the second heat exchanger and is operated at the second power, if T0 is less than or equal to Tb and T is less than or equal to T1, or T0 is less than or equal to Tb and T is more than or equal to T2, entering the cooling+cold accumulation mode;

in the cooling and cold accumulation mode, controlling the air conditioning refrigeration system to enable the mechanical cold source to cool the second heat exchanger, and controlling the air conditioning system to enable the mechanical cold source to cool the cold accumulation device;

In certain embodiments, the control method comprises:

After the mechanical cold source is enabled to cool the second heat exchanger and the air conditioning system is controlled to enable the mechanical cold source to cool the cold storage device, if T0 is less than or equal to Ta, the air conditioning refrigerating system is controlled to continuously enable the mechanical cold source to cool the second heat exchanger and the air conditioning system is controlled to continuously enable the mechanical cold source to cool the cold storage device;

After the mechanical cold source is enabled to cool the second heat exchanger, the air conditioning system is controlled to enable the mechanical cold source to cool the cold storage device, if T0> Ta, the air conditioning refrigerating system and the cold storage heat exchange system are controlled to enable the cold storage cold source and the mechanical cold source to cool the second heat exchanger for a third preset duration, and the mechanical cold source operates with a third power.

In certain embodiments, the control method comprises:

After the cold accumulation cold source and the mechanical cold source supply cold for the second heat exchanger for a third preset time period, if T0 is less than or equal to Ta after the mechanical cold source operates with third power, controlling the air conditioner refrigerating system and the cold accumulation heat exchange system to continuously enable the cold accumulation cold source and the mechanical cold source to supply cold for the second heat exchanger for the third preset time period, wherein the mechanical cold source operates with third power;

After the cold accumulation cold source and the mechanical cold source supply cold for the second heat exchanger for a third preset time period, if T0> Ta, the mechanical cold source supplies cold for the second heat exchanger until T0 is less than or equal to Ta, and the mechanical cold source operates with fourth power;

wherein the third power is less than the fourth power.

In certain embodiments, the control method comprises:

After the mechanical cold source is enabled to cool the second heat exchanger until T0 is less than or equal to Ta, and the mechanical cold source is operated at the fourth power, if T0 is more than Tb, controlling the air conditioner refrigerating system to enable the mechanical cold source to cool the second heat exchanger, and enabling the mechanical cold source to operate at the second power;

After the mechanical cold source is enabled to cool the second heat exchanger until T0 is less than or equal to Ta, and the mechanical cold source runs at fourth power, if T0 is less than or equal to Tb and T is less than or equal to T1, or T0 is less than or equal to Tb and T is more than or equal to T2, entering the cooling+cold accumulation mode;

And in the cooling and cold accumulation mode, controlling the air conditioner refrigerating system to enable the mechanical cold source to cool the second heat exchanger, and controlling the air conditioner system to enable the mechanical cold source to cool the cold accumulation device.

In certain embodiments, the air conditioning refrigeration system includes a refrigerant circuit, a fluorine pump, a compressor, and a first switching assembly coupled to the refrigerant circuit, the fluorine pump, and the compressor, the first switching assembly configured to control the fluorine pump and the compressor to access and remove the refrigerant circuit;

the cold accumulation heat exchange system comprises a cooling liquid loop, a cold accumulation device and a second switching assembly, wherein the cooling liquid loop is connected with the refrigerant loop through the first heat exchanger, the cooling liquid loop comprises the second heat exchanger, the second heat exchanger is used for exchanging heat with the load, the second switching assembly is connected with the cold accumulation device, the first heat exchanger and the second heat exchanger, and the second switching assembly is configured to control the cold accumulation device to be connected into the cooling liquid loop and to be moved out of the cooling liquid loop.

In certain embodiments, the second switching assembly comprises a first valve assembly and a second valve assembly;

the first valve assembly is connected with the outlet of the first heat exchanger, the inlet of the cold accumulation device and the inlet of the second heat exchanger, and is configured to control whether the cooling liquid flowing out of the first heat exchanger flows into the cold accumulation device or not;

The embodiment of the invention provides a control device of an air conditioning system, which comprises a processor and a memory;

the memory stores a computer program that, when executed by the processor, implements the steps of the control method according to any of the above embodiments.

The embodiment of the invention provides an air conditioning system, which comprises the control device.

An embodiment of the present invention provides a computer-readable storage medium having stored thereon a computer program that, when executed by a processor, implements the steps of the control method described in any of the above embodiments.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

fig. 1 is a schematic view of an air conditioning system according to an embodiment of the present invention;

Fig. 2 to 13 are flowcharts of a control method according to an embodiment of the present invention;

fig. 14 is a schematic block diagram of a control device according to an embodiment of the present invention.

The main reference numerals illustrate:

The control device 2, the memory 21, the processor 22, the air conditioning system 1000, the air conditioning refrigeration system 100, the cold storage heat exchange system 200, the first heat exchanger 101, the second heat exchanger 201, the third heat exchanger 102, the fluorine pump 103, the compressor 104, the throttle 105, the water pump 202, the cold storage device 203, the first switching assembly 106, the second switching assembly 204, the first valve 107, the second valve 108, the first valve assembly 205, the second valve assembly 206, the third valve 207, the fourth valve 208, the fifth valve 209, and the sixth valve 210.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interaction relationship between two elements, unless otherwise explicitly specified. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the embodiments of the present invention and are not to be construed as limiting the embodiments of the present invention.

Referring to fig. 1, an embodiment of the present invention provides an air conditioning system 1000. The air conditioning system 1000 includes an air conditioning refrigeration system 100 and a cold storage heat exchange system 200. The air conditioning refrigeration system 100 includes a refrigerant circuit, a fluorine pump 103, a compressor 104, and a first switching assembly 106. The first switching assembly 106 is connected to the refrigerant circuit, the fluorine pump 103, and the compressor 104. The first switching assembly 106 is configured to control the fluorine pump 103 and the compressor 104 to access and remove from the refrigerant circuit.

The cold storage heat exchange system 200 includes a coolant loop, a cold storage device 203, and a second switching assembly 204. The coolant circuit and the refrigerant circuit are connected by the first heat exchanger 101. The coolant circuit comprises a second heat exchanger 201, the second heat exchanger 201 being arranged to exchange heat with the load. The second switching assembly 204 is connected to the cold storage device 203, the first heat exchanger 101, and the second heat exchanger 201. The second switching assembly 204 is configured to control the switching of the cold storage device 203 into and out of the coolant circuit.

In case the cold storage device 203 is connected to the coolant circuit, the cold storage device 203 is configured to store the cold of the first heat exchanger 101 and to supply cold to the second heat exchanger 201.

In the above-mentioned air conditioning system 1000, on the one hand, the air conditioning refrigeration system 100 may utilize the cooperation of the fluorine pump 103, the compressor 104 and the first switching assembly 106 to provide the cooling capacity to the first heat exchanger 101 by utilizing the natural cooling capacity and/or the mechanical cooling capacity of the compressor 104, and on the other hand, the cold storage heat exchange system 200 may utilize the cooperation of the cold storage device 203 and the second switching assembly 204 to enable the cold storage device 203 to store the cooling capacity of the first heat exchanger 101 and supply the cooling capacity to the second heat exchanger 201, so that the energy consumption of the air conditioning system 1000 may be reduced to a certain extent.

Specifically, the air conditioning system 1000 is an apparatus for adjusting temperature. The load may be a heat generating component of a data center, such as a machine room. A data center is a facility for centrally storing, managing and processing large amounts of data, which during operation generates large amounts of heat that can affect the normal operation of the data center and even the environment and personnel safety. In order to effectively control the temperature of the data center, the embodiment of the invention provides the air conditioning system 1000 which is used for the data center, can ensure the normal operation of the data center to a certain extent, and can reduce the energy consumption of the air conditioning system 1000 to a certain extent, thereby reducing the PUE of the data center and the long-term operation cost of the data center.

The air conditioning system 1000 comprises an air conditioning refrigeration system 100 and a cold accumulation heat exchange system 200, and the air conditioning refrigeration system 100 and the cold accumulation heat exchange system 200 are connected through a first heat exchanger 101 to realize cold energy transmission. The air conditioning refrigeration system 100 may transfer the cold of the natural cold source and the mechanical cold source to the cold storage heat exchange system 200. The cold storage heat exchange system 200 may store the cold transferred by the air conditioning refrigeration system 100 and further transfer it to a load. The natural cold source is the cold energy of the natural environment, namely, the natural low-temperature resource is utilized for cooling. The mechanical cold source refers to cold energy provided by mechanical equipment (such as the compressor 104), and the mechanical cold source needs energy for driving.

The air conditioning refrigeration system 100 includes a fluorine pump 103, a compressor 104, a refrigerant circuit, and a first switching assembly 106. The refrigerant circuit may include a third heat exchanger 102, a throttle 105, a first heat exchanger 101.

The fluorine pump 103 is an apparatus for circulating and transporting a refrigerant (e.g., freon) in a refrigerant circuit. During the process of circulating the refrigerant in the refrigerant loop, the cold energy can be transferred and exchanged, and the load is helped to reduce the temperature.

The throttle 105 (e.g., an expansion valve or a throttle valve) may reduce the pressure and temperature of the refrigerant by restricting the flow of the refrigerant circulating in the refrigerant circuit. The compressor 104 may increase the pressure and temperature of the refrigerant by compressing the refrigerant. The throttle 105 and the compressor 104 may transfer and exchange more cold during the circulation of the refrigerant in the refrigerant circuit.

The first heat exchanger 101 and the third heat exchanger 102 are devices for transferring heat (i.e., transferring cold) between different mediums. The first heat exchanger 101 may exchange heat between the air conditioning refrigeration system 100 and the cold storage heat exchange system 200. The third heat exchanger 102 may exchange heat between the natural heat source and the refrigerant circulating in the refrigerant circuit. Wherein, the natural cold source can be low-temperature air, low-temperature water or other low-temperature substances in nature.

The first switching assembly 106 may be used to control the access and removal of the fluorine pump 103 and the compressor 104 from the refrigerant circuit, i.e., the first switching assembly 106 may adjust whether the fluorine pump 103 and the compressor 104 are involved in the refrigeration process when the air conditioning system 1000 is in different modes of operation.

The cold storage heat exchange system 200 includes a coolant loop, a cold storage device 203, and a second switching assembly 204. The coolant loop may include a second heat exchanger 201 and a water pump 202.

The water pump 202 is a device for circulating and delivering a cooling fluid (e.g., water) in a cooling fluid circuit. In the process that the cooling liquid circulates in the cooling liquid loop, the transmission and the exchange of cold energy can be realized, and the load is helped to reduce the temperature.

The second heat exchanger 201 is a device for transferring heat (i.e. transferring cold) between different media. The second heat exchanger 201 may exchange heat between the cold storage heat exchange system 200 and the load.

The cold storage device 203 is an apparatus capable of storing cold, which can store cold at low demand and provide additional cooling capacity at high demand or when the air conditioning and refrigerating system 100 malfunctions, so that energy consumption can be reduced to some extent and the operation efficiency of the air conditioning system 1000 can be improved.

The second switching assembly 204 may be used to control the switching of the cold storage device 203 into and out of the coolant circuit, i.e. the second switching assembly 204 may adjust whether the cold storage device 203 is involved in the cooling process when the air conditioning system 1000 is in a different mode of operation.

It should be noted that, the second switching component 204 may control the cold storage device 203 to be connected to and removed from the cooling liquid loop, which increases the independence and flexibility of the cold storage device 203 to a certain extent, and is beneficial to promoting the air conditioning system 1000 to realize modularization, thereby helping to optimize energy distribution, further reducing energy consumption of the air conditioning system 1000, and improving operation efficiency of the air conditioning system 1000. Meanwhile, the air conditioning system 1000 may maintain normal operation to some extent when the cold storage device 203 malfunctions or requires maintenance.

The fluorine pump 103 is used to circulate and convey the refrigerant in the refrigerant circuit. The water pump 202 is used to circulate and convey the coolant in the coolant circuit. In the present invention, the water pump 202 and the fluorine pump 103 are common terms in the art, and should not be construed as limiting the refrigerant and the cooling liquid of the present invention.

The refrigerant may undergo a phase change when flowing in the refrigerant circuit, thereby absorbing heat and releasing heat. Refrigerants include, but are not limited to, alkanes, tetrafluoroethane, freon, propane (R290), isobutane, etc., as the invention is not limited in this regard.

The temperature of the coolant changes (increases or decreases) while the coolant flows in the coolant circuit, but substantially no phase change occurs. The cooling fluid includes, but is not limited to, water, glycol, mixtures thereof (e.g., glycol-water mixtures), and the like, as the invention is not limited in this regard.

It should be noted that, the air conditioning system 1000 according to the embodiment of the present invention may be used for various loads requiring temperature control, where the data center belongs to an application scenario common in the art, but this should not be considered as a specific limitation of the present invention.

The cold accumulation device 203 may include, but is not limited to, phase change material cold accumulation, water cold accumulation, or ice cold accumulation. In one embodiment, the cold storage device 203 is filled with a phase change material, and the phase change point temperature is less than the first set temperature and greater than the ambient temperature.

In certain embodiments, referring to fig. 1, the first switching assembly 106 includes a first valve 107 and a second valve 108.

One end of the first valve 107 is connected to the inlet of the fluorine pump 103, and the other end is connected to the outlet of the fluorine pump 103. The first switching assembly 106 is configured to move the fluorine pump 103 out of the refrigerant circuit with the first valve 107 open and to switch the fluorine pump 103 into the refrigerant circuit with the first valve 107 closed.

One end of the second valve 108 is connected to the inlet of the compressor 104, and the other end is connected to the outlet of the compressor 104. The first switching assembly 106 is configured to move the compressor 104 out of the refrigerant circuit with the second valve 108 open and to switch the compressor 104 into the refrigerant circuit with the second valve 108 closed.

In the above embodiment, the first valve 107 may control the fluorine pump 103 to be connected to and disconnected from the refrigerant circuit, and the second valve 108 may control the compressor 104 to be connected to and disconnected from the refrigerant circuit, so that the natural cooling source and/or the mechanical cooling source of the compressor 104 may be used to provide cooling energy to the first heat exchanger 101, and thus the energy consumption of the air conditioning system 1000 may be reduced to a certain extent.

Specifically, the first valve 107 and the second valve 108 are members that control the flow of refrigerant by opening and closing the passage.

With the first valve 107 open, the fluorine pump 103 stops operating and the refrigerant flows from the inlet of the fluorine pump 103 through the first valve 107 and not through the fluorine pump 103 to the outlet of the fluorine pump 103, i.e., the fluorine pump 103 moves out of the refrigerant circuit. With the first valve 107 closed, the fluorine pump 103 is operated and the refrigerant passes from the inlet of the fluorine pump 103 through the fluorine pump 103 and does not pass through the first valve 107 to the outlet of the fluorine pump 103, i.e., the fluorine pump 103 is connected to the refrigerant circuit.

With the second valve 108 open, the compressor 104 is shut down and refrigerant flows from the inlet of the compressor 104 through the second valve 108 and not through the compressor 104 to the outlet of the compressor 104, i.e., the compressor 104 moves out of the refrigerant circuit. With the second valve 108 closed, the compressor 104 is operated and refrigerant flows from the inlet of the compressor 104 through the compressor 104 and not through the second valve 108 to the outlet of the compressor 104, i.e., the compressor 104 is connected to the refrigerant circuit.

Alternatively, the first valve 107 and the second valve 108 may be check valves for restricting the flow direction of the refrigerant.

In some embodiments, referring to fig. 1, the second switching assembly 204 includes a first valve assembly 205 and a second valve assembly 206. The first valve assembly 205 is connected to the outlet of the first heat exchanger 101, the inlet of the cold storage device 203 and the inlet of the second heat exchanger 201. The first valve assembly 205 is configured to control whether the coolant flowing from the first heat exchanger 101 flows into the cold storage device 203.

The second valve assembly 206 is connected to the outlet of the cold storage device 203, the inlet and outlet of the second heat exchanger 201 and the inlet of the first heat exchanger 101. The second valve assembly 206 is configured to control whether the coolant flowing out of the cold storage device 203 flows back to the first heat exchanger 101 through the second heat exchanger 201.

In the above embodiment, the first valve assembly 205 may control the cold storage device 203 to be connected to and removed from the coolant loop, and the second valve assembly 206 may control whether the cold storage device 203 stores the cold of the first heat exchanger 101, so that the cold storage device 203 may store the cold of the first heat exchanger 101 and supply cold to the second heat exchanger 201 by using the cooperation of the cold storage device 203, the first valve assembly 205 and the second valve assembly 206, so that the energy consumption of the air conditioning system 1000 may be reduced to a certain extent.

Specifically, the first valve assembly 205 may control whether the cooling liquid flowing out of the first heat exchanger 101 flows into the cold storage device 203. In one embodiment, the cooling fluid flows from the outlet of the first heat exchanger 101 through the first valve assembly 205 to the inlet of the second heat exchanger 201, i.e., the cooling fluid flowing from the first heat exchanger 101 does not flow into the cold storage device 203. In one embodiment, the cooling fluid flows from the outlet of the first heat exchanger 101 through the first valve assembly 205 to the inlet of the cold storage device 203, i.e. the cooling fluid flowing from the first heat exchanger 101 flows into the cold storage device 203.

The second valve assembly 206 may control whether the cooling liquid flowing out of the cold storage device 203 flows back to the first heat exchanger 101 through the second heat exchanger 201. In one embodiment, the cooling fluid flows from the outlet of the cold storage device 203 through the second valve assembly 206 to the inlet of the second heat exchanger 201, and then flows back from the outlet of the second heat exchanger 201 to the inlet of the first heat exchanger 101, that is, the cooling fluid flowing out of the cold storage device 203 flows back to the first heat exchanger 101 through the second heat exchanger 201. In one embodiment, the cooling fluid flows from the outlet of the cold storage device 203 through the second valve assembly 206 to the outlet of the second heat exchanger 201, and then flows back from the outlet of the second heat exchanger 201 to the inlet of the first heat exchanger 101, that is, the cooling fluid flowing out of the cold storage device 203 does not flow back to the first heat exchanger 101 through the second heat exchanger 201.

It will be appreciated that the first valve assembly 205 is configured to control the cold storage device 203 to move out of the coolant circuit in the event that coolant flowing from the first heat exchanger 101 does not flow into the cold storage device 203. In case the coolant flowing out of the first heat exchanger 101 flows into the cold storage device 203, the first valve assembly 205 is configured to control the cold storage device 203 to be connected into the coolant circuit.

It will be appreciated that in the case where the cooling liquid flowing out of the cold storage device 203 flows back to the first heat exchanger 101 through the second heat exchanger 201, the second valve assembly 206 is configured to control the cold storage device 203 to supply cold to the second heat exchanger 201, that is, not to store the cold of the first heat exchanger 101. In the case where the cooling liquid flowing out of the cold storage device 203 does not flow back to the first heat exchanger 101 through the second heat exchanger 201, the second valve assembly 206 is configured to control the cold storage device 203 to store the cold of the first heat exchanger 101.

In combination, the first valve assembly 205 may control the switching of the cold storage device 203 into and out of the coolant circuit. In case the cold storage device 203 is connected to the coolant circuit, the second valve assembly 206 may control the cold storage device 203 to store the cold of the first heat exchanger 101 and supply the cold to the second heat exchanger 201.

It can be appreciated that the first valve assembly 205 can control the cold accumulation device 203 to be connected to and disconnected from the coolant loop, which increases the independence and flexibility of the cold accumulation device 203 to a certain extent, and is beneficial to promoting the air conditioning system 1000 to realize modularization, thereby helping to optimize energy distribution, further reducing energy consumption of the air conditioning system 1000, and improving the operation efficiency of the air conditioning system 1000. Meanwhile, the air conditioning system 1000 may maintain normal operation to some extent when the cold storage device 203 malfunctions or requires maintenance.

In certain embodiments, referring to fig. 1, the first valve assembly 205 comprises a third valve 207 and a fourth valve 208. The third valve 207 connects the outlet of the first heat exchanger 101 and the inlet of the cold storage device 203. The fourth valve 208 connects the outlet of the first heat exchanger 101 with the inlet of the second heat exchanger 201.

In the above embodiment, the third valve 207 and the fourth valve 208 can control the cold storage device 203 to be connected to and removed from the cooling liquid loop, which increases the independence and flexibility of the cold storage device 203 to a certain extent, and is beneficial to promoting the air conditioning system 1000 to realize modularization, thereby being beneficial to optimizing energy distribution, further reducing the energy consumption of the air conditioning system 1000 and improving the operation efficiency of the air conditioning system 1000. Meanwhile, when the cold accumulation device 203 fails or needs maintenance, the air conditioning system 1000 is beneficial to maintain normal operation to a certain extent.

Specifically, the third valve 207 and the fourth valve 208 are members that control the flow of the coolant by opening and closing the passages.

In one embodiment, the third valve 207 is closed and the fourth valve 208 is open. The cooling liquid flows from the outlet of the first heat exchanger 101 through the fourth valve 208 to the inlet of the second heat exchanger 201, i.e. the third valve 207 and the fourth valve 208 are arranged such that the cooling liquid flowing out of the first heat exchanger 101 does not flow into the cold storage device 203. In one embodiment, the third valve 207 is open and the fourth valve 208 is open. The cooling liquid flows from the outlet of the first heat exchanger 101 through both the third valve 207 and the fourth valve 208 to the inlet of the cold storage device 203 and the inlet of the second heat exchanger 201, i.e. the third valve 207 and the fourth valve 208 are configured such that the cooling liquid flowing out of the first heat exchanger 101 flows into the cold storage device 203. In one embodiment, the third valve 207 is open and the fourth valve 208 is closed. The cooling liquid flows from the outlet of the first heat exchanger 101 through the third valve 207 to the inlet of the cold storage device 203, i.e. the third valve 207 and the fourth valve 208 are arranged such that the cooling liquid flowing out of the first heat exchanger 101 flows into the cold storage device 203.

In certain embodiments, referring to fig. 1, the second valve assembly 206 includes a fifth valve 209 and a sixth valve 210. The fifth valve 209 connects the outlet of the cold storage device 203 and the outlet of the second heat exchanger 201. The sixth valve 210 connects the outlet of the cold storage device 203 and the inlet of the second heat exchanger 201.

In the above embodiment, the fifth valve 209 and the sixth valve 210 may control whether the cold accumulation device 203 stores the cold of the first heat exchanger 101, so that the cold accumulation device 203 may store the cold of the first heat exchanger 101 and supply the cold to the second heat exchanger 201 by using the cooperation of the cold accumulation device 203, the fifth valve 209 and the sixth valve 210, thereby reducing the energy consumption of the air conditioning system 1000 to some extent.

Specifically, the fifth valve 209 and the sixth valve 210 are members that control the flow of the coolant by opening and closing the passages.

In one embodiment, the fifth valve 209 is closed and the sixth valve is open. The cooling liquid flows from the outlet of the cold storage device 203 to the inlet of the second heat exchanger 201 through the sixth valve 210, and then flows back from the outlet of the second heat exchanger 201 to the inlet of the first heat exchanger 101, that is, the fifth valve 209 and the sixth valve 210 are configured such that the cooling liquid flowing out of the cold storage device 203 flows back to the inlet of the first heat exchanger 101 through the second heat exchanger 201. In one embodiment, the fifth valve 209 is open and the sixth valve is closed. The cooling liquid flows from the outlet of the cold storage device 203 through the fifth valve 209 to the inlet of the first heat exchanger 101, i.e. the fifth valve 209 and the sixth valve 210 are configured such that the cooling liquid flowing out of the cold storage device 203 does not flow back through the second heat exchanger 201 to the inlet of the first heat exchanger 101.

In some embodiments, referring to fig. 1 and 2, the air conditioning system 1000 has a cooling mode and a cooling+cold storage mode. In the cooling mode, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 to cool one of the heat sinks cooling the second heat exchanger 201, the fluorine pump 103, the compressor 104, the fluorine pump 103+the compressor 104, the cold storage device 203, the fluorine pump 103+the cold storage device 203, the compressor 104+the cold storage device 203, and the fluorine pump 103+the compressor 104+the cold storage device 203.

In the cooling and cold storage mode, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 to cool one of the heat sinks of the fluorine pump 103, the compressor 104, the fluorine pump 103+the compressor 104 for the second heat exchanger 201, and to control the second switching assembly 204 to cause the cold storage device 203 to store the cold of the first heat exchanger 101.

In the above embodiment, the air conditioning system 1000 may control the first switching component 106 and the second switching component 204 to make different cold sources or combinations of cold sources supply cold to the second heat exchanger 201, and control the second switching component 204 to make the cold storage device 203 store the cold energy of the first heat exchanger 101, so as to implement flexible switching and efficient operation of multiple operation modes, and improve the operation efficiency and reliability stability of the air conditioning system 1000 to a certain extent.

Specifically, in the cooling mode, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 such that at least one of the natural cooling source, the mechanical cooling source corresponds to, and the cold storage cooling source supplies cooling to the second heat exchanger 201. The fluorine pump 103 corresponds to a natural cold source, the compressor 104 corresponds to a mechanical cold source, and the cold storage device 203 corresponds to a cold storage cold source.

When the air conditioning system 1000 is in the cooling mode, the cold storage device 203 is configured to not store the cooling capacity of the first heat exchanger 101 and to supply cooling to the second heat exchanger 201. When the air conditioning system 1000 is in the cooling and cold storage mode, the cold storage device 203 is configured to store the cold of the first heat exchanger 101.

Alternatively, for convenience of explanation of the embodiment of the present invention, the cooling mode may include mode 1, mode 3, mode 5, mode 7, mode 8, mode 9, mode 10. The cooling + cold storage modes may include mode 2, mode 4, mode 6.

In mode 1, the first switching assembly 106 and the second switching assembly 204 are controlled to cool the fluorine pump 103 for the second heat exchanger 201, that is, the first valve 107 is controlled to be closed, the second valve 108 is controlled to be opened, the third valve 207 is controlled to be closed, the fourth valve 208 is controlled to be opened, the fifth valve 209 is controlled to be closed, and the sixth valve 210 is controlled to be closed.

In mode 2, the first switching assembly 106 and the second switching assembly 204 are controlled to enable the fluorine pump 103 to cool the second heat exchanger 201, and the second switching assembly 204 is controlled to enable the cold storage device 203 to store the cold energy of the first heat exchanger 101, that is, the first valve 107 is controlled to be closed, the second valve 108 is controlled to be opened, the third valve 207 is controlled to be opened, the fourth valve 208 is controlled to be opened, the fifth valve 209 is controlled to be opened, and the sixth valve 210 is controlled to be closed.

In mode 3, the first switching assembly 106 and the second switching assembly 204 are controlled to cause the fluorine pump 103+compressor 104 to cool the second heat exchanger 201, and the compressor 104 is operated at the first power, i.e., the first valve 107 is closed, the second valve 108 is closed, the third valve 207 is closed, the fourth valve 208 is open, the fifth valve 209 is closed, and the sixth valve 210 is closed.

In mode 4, the first switching assembly 106 and the second switching assembly 204 are controlled to cool the fluorine pump 103+the compressor 104 for the second heat exchanger 201, and the second switching assembly 204 is controlled to cool the cold storage device 203 for storing the cooling capacity of the first heat exchanger 101, that is, the first valve 107 is controlled to be closed, the second valve 108 is controlled to be closed, the third valve 207 is controlled to be opened, the fourth valve 208 is controlled to be opened, the fifth valve 209 is controlled to be opened, and the sixth valve 210 is controlled to be closed.

In mode 5, the first switching assembly 106 and the second switching assembly 204 are controlled to cause the compressor 104 to cool the second heat exchanger 201, and the compressor 104 is operated at the second power, i.e., the first valve 107 is controlled to open, the second valve 108 is controlled to close, the third valve 207 is controlled to close, the fourth valve 208 is controlled to open, the fifth valve 209 is controlled to close, and the sixth valve 210 is controlled to close.

In mode 6, the first switching assembly 106 and the second switching assembly 204 are controlled to cause the compressor 104 to cool the second heat exchanger 201, and the second switching assembly 204 is controlled to cause the cold storage device 203 to store the cold of the first heat exchanger 101, that is, the first valve 107 is controlled to be opened, the second valve 108 is controlled to be closed, the third valve 207 is controlled to be opened, the fourth valve 208 is controlled to be opened, the fifth valve 209 is controlled to be opened, and the sixth valve 210 is controlled to be closed.

In mode 7, the first switching assembly 106 and the second switching assembly 204 are controlled to cause the cold storage device 203 to cool the second heat exchanger 201, that is, the third valve 207 is controlled to open, the fourth valve 208 is controlled to close, the fifth valve 209 is controlled to close, and the sixth valve 210 is controlled to open. The compressor 104 and the fluorine pump 103 are stopped.

In mode 8, the first switching assembly 106 and the second switching assembly 204 are controlled to enable the fluorine pump 103+ cold storage device 203 to supply cold to the second heat exchanger 201, that is, the first valve 107 is controlled to be closed, the second valve 108 is controlled to be opened, the third valve 207 is controlled to be opened, the fourth valve 208 is controlled to be closed, the fifth valve 209 is controlled to be closed, and the sixth valve 210 is controlled to be opened.

In mode 9, the first switching assembly 106 and the second switching assembly 204 are controlled to enable the fluorine pump 103+the compressor 104+the cold storage device 203 to cool the second heat exchanger 201, that is, the first valve 107 is controlled to be closed, the second valve 108 is controlled to be closed, the third valve 207 is controlled to be opened, the fourth valve 208 is controlled to be closed, the fifth valve 209 is controlled to be closed, and the sixth valve 210 is controlled to be opened.

In mode 10, the first switching assembly 106 and the second switching assembly 204 are controlled to cause the compressor 104+ cold storage device 203 to cool the second heat exchanger 201, and the compressor 104 is controlled to operate at the third power, i.e., the first valve 107 is controlled to open, the second valve 108 is controlled to close, the third valve 207 is controlled to open, the fourth valve 208 is controlled to close, the fifth valve 209 is controlled to close, and the sixth valve 210 is controlled to open.

The power of the compressor 104 may be controlled by adjusting the rotation speed of the compressor 104. The first power is less than the second power. In mode 3, the air conditioning system 1000 may utilize the natural cooling source and the mechanical cooling source to jointly cool the second heat exchanger 201, and the rotation speed of the compressor 104 is slower. In mode 3, the air conditioning system 1000 may utilize the mechanical heat sink to cool the second heat exchanger 201, and the rotation speed of the compressor 104 is relatively high. It will be appreciated that the speed of the compressor 104 is proportional to the amount of cooling of the mechanical heat sink. The speed of the compressor 104 is proportional to the energy consumption of the air conditioning system 1000.

In certain embodiments, referring to fig. 1 and 2, when the air conditioning system 1000 is powered off, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 to cause the cold storage device 203 to cool the second heat exchanger 201;

When the air conditioning system 1000 is powered on, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 to cool one of the heat sinks for the second heat exchanger 201, the fluorine pump 103, the compressor 104, the fluorine pump 103+the cold storage device 203, the compressor 104+the cold storage device 203, the fluorine pump 103+the compressor 104+the cold storage device 203, and to control the second switching assembly 204 to cause the cold storage device 203 to store the cooling capacity of the first heat exchanger 101.

In the above embodiment, when the air conditioning system 1000 is powered off, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 to make the cold storage device 203 supply cold to the second heat exchanger 201, which is beneficial to realizing the uninterrupted cooling requirement of the load.

Specifically, when the air conditioning system 1000 is powered off, the cold accumulation cold source may function as an emergency cold source. At this time, the air conditioning refrigeration system 100 stops operating, and the air conditioning system 1000 is controlled to operate in mode 7. During mode 7 of operation of the air conditioning system 1000, the water pump 202 may be powered by an emergency power source, such as a UPS (Uninterruptible Power Supply ). It will be appreciated that emergency power supplies are typically small in capacity and cannot support the normal operation of the entire air conditioning system 1000 for extended periods of time.

When the air conditioning system 1000 is powered on, different cold sources or combinations of cold sources can be made according to the requirements, so that the air conditioning system 1000 can be operated in different modes.

In fig. 2, when the air conditioning system 1000 is in the power-off state, the current signal e=1, that is, the current signal is interrupted, and when the air conditioning system 1000 is in the power-on state, the current signal e=0, that is, the current signal is normal.

In certain embodiments, referring to fig. 1 and 2, in the case of T0-T1> T', the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 to cause the fluorine pump 103 to cool the second heat exchanger 201;

In the case of T "< T0-T1 +.t', the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 such that the fluorine pump 103+compressor 104 cools the second heat exchanger 201, the compressor 104 operating at the first power;

In the case where T0-T1 is less than or equal to T ", the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 such that the compressor 104 cools the second heat exchanger 201, the compressor 104 operating at a second power;

wherein T0 is the temperature of the cooling liquid at the inlet of the second heat exchanger 201, T1 is the ambient temperature, T 'is a first set value, T "is a second set value, T' > T", and the first power is smaller than the second power.

In the above embodiment, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 and the ambient temperature T1, and the mechanical cooling source is effectively and dynamically adjusted according to the surplus and shortage of the natural cooling source to ensure the cooling effect, so as to optimize the use and energy efficiency adjustment of the cooling source, and reduce the energy consumption of the air conditioning system 1000 while meeting the cooling requirement of the load to a certain extent.

Specifically, when the air conditioning system 1000 is in an energized state, the air conditioning system 1000 operates in mode 1 in the case of T0-T1> T ', in the case of T "< T0-T1. Ltoreq.T', in mode 3, in the case of T0-T1. Ltoreq.T", in mode 5.

It can be appreciated that when the air conditioning system 1000 is in the energized state, the operating mode 1 can fully utilize the natural cold source to supply cold for the load when the difference between the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 and the ambient temperature T1 is large, that is, when the cold of the natural cold source is sufficient, so that the energy consumption of the air conditioning system 1000 is reduced to a certain extent.

When the difference between the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 and the ambient temperature T1 is moderate, that is, when the cooling capacity of the natural cooling source is moderate, the operation mode 3 can intervene a proper amount of mechanical cooling source to supply cooling for the load together on the basis of the natural cooling source, so that the cooling requirement of the load is met to a certain extent.

When the difference between the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 and the ambient temperature T1 is smaller, that is, when the cooling capacity of the natural cooling source is insufficient, the operation mode 5 can make the mechanical cooling source completely replace the natural cooling source to supply cooling for the load, so that a good cooling effect is ensured to a certain extent at a higher ambient temperature.

It should be noted that the amount of cold of the natural cold source is proportional to T0-T1.

The first set point T' may be set according to factors such as the environment, cooling requirements, and performance of the air conditioning system 1000. Illustratively, the first set point T' =10 ℃.

The second set point T "may be set according to factors such as the environment, cooling requirements, and performance of the air conditioning system 1000. Illustratively, the second set value T "=5 ℃.

In some embodiments, referring to fig. 1 and 2, after cooling the fluorine pump 103 to the second heat exchanger 201, if Tb < T0 is less than or equal to Ta, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 to continue cooling the fluorine pump 103 to the second heat exchanger 201;

After cooling the fluorine pump 103 to the second heat exchanger 201, if T0> Ta, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 to cause the fluorine pump 103+ cold storage device 203 to cool the second heat exchanger 201 for a first preset period of time;

after the fluorine pump 103 is made to cool the second heat exchanger 201, if T0 is equal to or less than Tb, entering a cooling+cold storage mode;

In the cooling+cold storage mode, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 to cause the fluorine pump 103 to cool the second heat exchanger 201, and control the second switching assembly 204 to cause the cold storage device 203 to store the cold of the first heat exchanger 101;

In the above embodiment, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201, the first set temperature Ta and the second set temperature Tb, and the cold storage cold source is effectively and dynamically adjusted according to the level of the cooling requirement of the air conditioning system 1000 to ensure the cooling effect, so that the use and energy efficiency adjustment of the cold source are optimized, the cooling requirement of the load is met to a certain extent, and the energy consumption of the air conditioning system 1000 is reduced.

Specifically, when the air conditioning system 1000 is in the mode 1, the air conditioning system 1000 continues to operate in the mode 1 under the condition that Tb < T0 is less than or equal to Ta, the air conditioning system 1000 operates in the mode 8 for a first preset time period under the condition that T0 is more than or equal to Ta, and the air conditioning system 1000 operates in the mode 2 under the condition that T0 is less than or equal to Tb.

It can be appreciated that when the air conditioning system 1000 is in the mode 1, the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta and is greater than the second set temperature Tb, that is, when the cooling requirement of the air conditioning system 1000 is moderate, the air conditioning system 1000 continues to operate in the mode 1 to utilize the natural cooling source to supply the cooling for the load, so as to reduce the energy consumption of the air conditioning system 1000 to a certain extent.

When the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the cooling demand of the air conditioning system 1000 is high, the first preset duration of the operation mode 8 can fully utilize the natural cooling source, and further utilize the cold storage cooling source to supply cold for the load, so that the energy consumption of the air conditioning system 1000 is reduced to a certain extent while the cooling demand of the load is satisfied.

When the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is less than or equal to the second set temperature Tb, that is, when the cooling demand of the air conditioning system 1000 is low, the operation mode 2 can fully utilize the natural cooling source to supply the load with cooling, and simultaneously utilize the surplus cooling capacity of the natural cooling source to supply the cooling capacity of the cold storage device 203 so that the cold storage device 203 stores the surplus cooling capacity of the natural cooling source as a standby, thereby further fully utilizing the natural cooling source and reducing the energy consumption of the air conditioning system 1000.

It should be noted that the level of the cooling demand of the air conditioning system 1000 is proportional to the size of T0.

The first set temperature Ta may be set according to factors such as the environment, cooling requirements, and performance of the air conditioning system 1000. Illustratively, the first set temperature Ta e (15 ℃,21 ℃).

The second set temperature Tb may be set according to factors such as the environment, cooling requirements, and performance of the air conditioning system 1000. Illustratively, the first set temperature Tb=Ta-2 ℃.

The first preset time period may be set according to factors such as the environment, cooling requirements, and performance of the air conditioning system 1000. The first preset time period is, for example, 5 minutes (min).

In some embodiments, referring to fig. 1 and 2, after the fluorine pump 103 is made to cool the second heat exchanger 201 and the second switching assembly 204 is controlled to make the cold storage device 203 store the cooling capacity of the first heat exchanger 101, if T0 is less than or equal to Ta, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 to continue to make the fluorine pump 103 to cool the second heat exchanger 201 and control the second switching assembly 204 to continue to make the cold storage device 203 store the cooling capacity of the first heat exchanger 101;

After the fluorine pump 103 is made to cool the second heat exchanger 201 and the second switching assembly 204 is controlled to make the cold storage device 203 store the cooling capacity of the first heat exchanger 101, if T0> Ta, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 to make the fluorine pump 103+the cold storage device 203 to cool the second heat exchanger 201 for a first preset period of time.

In the above embodiment, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 and the first set temperature Ta, and the cold storage cold source is further dynamically adjusted according to the further surplus and shortage of the natural cold source to ensure the cooling effect, so that the use and energy efficiency adjustment of the cold source are optimized, the cooling requirement of the load is met to a certain extent, and the energy consumption of the air conditioning system 1000 is reduced.

Specifically, when the air conditioning system 1000 is in the mode 2, the air conditioning system 1000 continues to operate in the mode 2 under the condition that T0 is less than or equal to Ta, and the air conditioning system 1000 operates in the mode 8 for a first preset time period under the condition that T0 is more than or equal to Ta.

It can be understood that when the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta, that is, when the natural cooling source still has surplus cooling capacity, the air conditioning system 1000 continues to operate in the mode 2 to fully utilize the natural cooling source to supply cooling for the load, and simultaneously utilize the surplus cooling capacity of the natural cooling source to supply cooling for the cold storage device 203 so that the cold storage device 203 stores the surplus cooling capacity of the natural cooling source as a standby, thereby further fully utilizing the natural cooling source and reducing the energy consumption of the air conditioning system 1000.

When the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the cooling capacity of the natural cooling source is insufficient, the first preset duration of the operation mode 8 can fully utilize the natural cooling source, and further utilize the cold storage cooling source to supply cooling for the load, so that the energy consumption of the air conditioning system 1000 is reduced to a certain extent while the cooling requirement of the load is met.

When the air conditioning system 1000 is in the mode 2, if T0> Ta, the air conditioning system 1000 is switched from the mode 2 to the mode 8, that is, from the mode 2 of the cooling+cold storage mode to the mode 8 of the cooling mode, at this time, the fluorine pump 103 of the air conditioning refrigeration system 100 remains unchanged, and the cold storage heat exchange system 200 is configured to stop storing the cold amount and then to supply the cold to the second heat exchanger 201.

It will be appreciated that in fig. 2, when the air conditioning system 1000 is in mode 2, in the case of T0> Ta, the air conditioning system 1000 is first switched to mode 1, that is, the fluorine pump 103 of the air conditioning refrigeration system 100 remains unchanged, the cold-storage heat exchange system 200 is first configured to stop storing cold, and since T0> Ta is still satisfied at this time, the air conditioning system 1000 is switched from mode 1 to mode 8, that is, the cold-storage heat exchange system 200 is configured to supply cold to the second heat exchanger 201. In some embodiments, referring to fig. 1 and 2, after the fluorine pump 103+ cold storage device 203 is made to cool the second heat exchanger 201 for a first preset period of time, if T0 is less than or equal to Ta, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 to continue to make the fluorine pump 103+ cold storage device 203 cool the second heat exchanger 201 for the first preset period of time;

After the fluorine pump 103+ cold storage device 203 is allowed to cool the second heat exchanger 201 for a first preset period of time, if T0> Ta, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 such that the fluorine pump 103+ compressor 104 is allowed to cool the second heat exchanger 201, and the compressor 104 is operated at the first power.

In the above embodiment, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 and the first set temperature Ta, and the mechanical cooling source is dynamically adjusted according to the cooling capacity to ensure the cooling effect, so as to optimize the use and energy efficiency adjustment of the cooling source, and reduce the energy consumption of the air conditioning system 1000 while meeting the cooling requirement of the load to a certain extent.

Specifically, after the air conditioning system 1000 operates in the mode 8 for a first preset period of time, if T0 is less than or equal to Ta, the air conditioning system 1000 continues to operate in the mode 8 for the first preset period of time, and if T0 is greater than Ta, the air conditioning system 1000 operates in the mode 3.

It can be appreciated that after the first preset time period of the operation mode 8 of the air conditioning system 1000, when the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta, that is, when the natural cooling source and the cold storage cooling source can meet the cooling requirement of the air conditioning system 1000, the operation mode 8 is continued to utilize the natural cooling source and the cold storage cooling source to jointly supply the load for cooling, so that the energy consumption of the air conditioning system 1000 is reduced to a certain extent.

When the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the natural cooling source and the cold storage cooling source cannot meet the cooling requirement of the air conditioning system 1000, the operation mode 3 uses a proper amount of mechanical cooling source to jointly supply cooling for the load on the basis of the natural cooling source, so as to ensure that the cooling requirement of the load is met to a certain extent.

In certain embodiments, referring to fig. 1 and 2, after cooling the fluorine pump 103+ compressor 104 to the second heat exchanger 201, if Tb < T0 is less than or equal to Ta after the compressor 104 is operated at the first power, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 to continue cooling the fluorine pump 103+ compressor 104 to the second heat exchanger 201, the compressor 104 is operated at the first power;

After the fluorine pump 103+compressor 104 is caused to cool the second heat exchanger 201, and after the compressor 104 is operated at the first power, if T0> Ta, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 to cause the fluorine pump 103+compressor 104+cold storage device 203 to cool the second heat exchanger 201 for a second preset period of time;

After the fluorine pump 103 is made to cool the second heat exchanger 201, if T0 is less than or equal to Tb, T is less than or equal to T1, or T0 is less than or equal to Tb and T is greater than or equal to T2 after the compressor 104 is operated at the first power, entering a cooling+cold storage mode;

In the cooling and cold storage mode, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 to enable the fluorine pump 103+the compressor 104 to supply cold to the second heat exchanger 201, and control the second switching assembly 204 to enable the cold storage device 203 to store the cold energy of the first heat exchanger 101;

In the above embodiment, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201, the first set temperature Ta and the second set temperature Tb, and the cold-storage cold source is dynamically adjusted according to the level and time of the cooling requirement of the air conditioning system 1000 to ensure the cooling effect and meet the time requirement, so as to optimize the use and energy efficiency adjustment of the cold source, and reduce the energy consumption of the air conditioning system 1000 while meeting the cooling requirement of the load to a certain extent.

Specifically, when the air conditioning system 1000 is in mode 3, the air conditioning system 1000 continues to operate in mode 3 if Tb < T0 < Ta, in mode 9 of the air conditioning system 1000 for a second preset period of time if T0> Ta, in mode 4 of the air conditioning system 1000 if T0 < Tb and T < T1, or T0 < Tb and T > T2.

It can be appreciated that when the air conditioning system 1000 is in the mode 3, the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta and is greater than the second set temperature Tb, that is, when the cooling requirement of the air conditioning system 1000 is moderate, the air conditioning system 1000 continues to operate in the mode 3 to utilize the natural cooling source and the mechanical energy source to supply the cooling for the load, so as to reduce the energy consumption of the air conditioning system 1000 to a certain extent.

When the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the cooling requirement of the air conditioning system 1000 is high, the second preset duration of the operation mode 9 can fully utilize the natural cooling source and the mechanical cooling source, and further utilize the cold storage cooling source to cool the load, so that the energy consumption of the air conditioning system 1000 is reduced to a certain extent while the cooling requirement of the load is satisfied.

When the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is less than or equal to the second set temperature Tb and T is less than or equal to T1, or T0 is less than or equal to Tb and T is greater than or equal to T, that is, when the cooling demand of the air conditioning system 1000 is low and the set time period is within, the operation mode 4 can meet the time demand, and the natural cooling source and the mechanical cooling source are fully utilized to supply cooling for the load, and simultaneously, the surplus cooling capacity of the natural cooling source and the mechanical cooling source is utilized to supply cooling for the cold storage device 203 so that the surplus cooling capacity of the natural cooling source and the surplus cooling capacity of the mechanical cooling source are stored as standby by the cold storage device 203, so that the natural cooling source and the mechanical cooling source are fully utilized further, and the energy consumption of the air conditioning system 1000 is reduced.

The current time t epsilon [0h,24h ] shows that the value range of the current time t is more than or equal to 0 and less than or equal to 24, namely 24 hours (h) a day.

The first setting time t1 and the second setting time t2 may be set by factors such as peak-to-valley electricity prices and environments. In one embodiment, the first set time t1=5:00 (i.e. 5 a.m.), and the second set time t2=22:00 (i.e. 10 a.m.).

The second preset time period may be set according to factors such as the environment, cooling requirements, and performance of the air conditioning system 1000. The second preset time period is, for example, 5 minutes (min).

In some embodiments, referring to fig. 1 and 2, after the fluorine pump 103+compressor 104 is caused to cool the second heat exchanger 201 and the second switching component 204 is controlled to cause the cold storage device 203 to store the cooling capacity of the first heat exchanger 101, if T0 is less than or equal to Ta, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to continue to cause the fluorine pump 103+compressor 104 to cool the second heat exchanger 201 and control the second switching component 204 to continue to cause the cold storage device 203 to store the cooling capacity of the first heat exchanger 101;

After the fluorine pump 103+compressor 104 is made to cool the second heat exchanger 201 and the second switching assembly 204 is controlled to make the cold storage device 203 store the cooling capacity of the first heat exchanger 101, if T0> Ta, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 to make the fluorine pump 103+compressor 104+cold storage device 203 cool the second heat exchanger 201 for a second preset period of time.

In the above embodiment, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 and the first set temperature Ta, and the cold storage cold source is further dynamically adjusted according to the further surplus and shortage of the natural cold source and the mechanical cold source to ensure the cooling effect, so that the use and energy efficiency adjustment of the cold source are optimized, the cooling requirement of the load is met to a certain extent, and the energy consumption of the air conditioning system 1000 is reduced.

Specifically, when the air conditioning system 1000 is in the mode 4, the air conditioning system 1000 continues to operate in the mode 4 in the case of T0. Ltoreq.Ta, and the air conditioning system 1000 operates in the mode 9 for a second preset period in the case of T0> Ta.

It can be appreciated that when the air conditioning system 1000 is in the mode 4, when the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta, that is, when the natural cooling source and the mechanical cooling source still have surplus cooling capacity, the mode 4 is continuously operated to fully utilize the natural cooling source and the mechanical cooling source to supply cooling for loads, and simultaneously, the surplus cooling capacity of the natural cooling source and the mechanical cooling source is utilized to supply cooling for the cold storage device 203 so that the cold storage device 203 stores the surplus cooling capacity of the natural cooling source and the mechanical cooling source as a standby, thereby further fully utilizing the natural cooling source and the mechanical cooling source and reducing the energy consumption of the air conditioning system 1000.

When the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the cooling capacity of the natural cooling source and the mechanical cooling source is insufficient, the second preset duration of the operation mode 9 can fully utilize the natural cooling source and the mechanical cooling source, and further utilize the cold storage cooling source to supply cold for the load, which is beneficial to meeting the cooling requirement of the load and reducing the energy consumption of the air conditioning system 1000 to a certain extent.

When the air conditioning system 1000 is in the mode 4, if T0> Ta, the air conditioning system 1000 is switched from the mode 4 to the mode 9, that is, from the mode 4 of the cooling+cold storage mode to the mode 9 of the cooling mode, and at this time, the fluorine pump 103 of the air conditioning refrigeration system 100 remains unchanged, the cold storage heat exchange system 200 is configured to stop storing the cold amount and then to supply the cold to the second heat exchanger 201.

It will be appreciated that in fig. 2, when the air conditioning system 1000 is in mode 4, in the case of T0> Ta, the air conditioning system 1000 is first switched to mode 3, i.e. the fluorine pump 103 of the air conditioning refrigeration system 100 remains unchanged, the cold storage heat exchange system 200 is first configured to stop storing cold, and since T0> Ta is still satisfied at this time, the air conditioning system 1000 is switched from mode 3 to mode 9, i.e. the cold storage heat exchange system 200 is again configured to supply cold to the second heat exchanger 201.

In some embodiments, referring to fig. 1 and 2, after the fluorine pump 103+the compressor 104+the cold storage device 203 is caused to cool the second heat exchanger 201 for a second preset period of time, if T0 is less than or equal to Ta, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to continue to cause the fluorine pump 103+the compressor 104+the cold storage device 203 to cool the second heat exchanger 201 for the second preset period of time;

after the fluorine pump 103+the compressor 104+the cold storage device 203 is caused to cool the second heat exchanger 201 for the second preset period of time, if T0> Ta, the air conditioning system 1000 is configured to control the first switching component 106 and the second switching component 204 to cause the compressor 104 to cool the second heat exchanger 201, and the compressor 104 is operated at the second power.

In the above embodiment, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 and the first set temperature Ta, and the mechanical cooling source is dynamically adjusted according to the cooling capacity to ensure the cooling effect, so that the use and energy efficiency adjustment of the cooling source are optimized, the cooling requirement of the load is met to a certain extent, and the energy consumption of the air conditioning system 1000 is reduced.

Specifically, after the air conditioning system 1000 operates in the mode 9 for a second preset time period, the air conditioning system 1000 continues to operate in the mode 9 for the second preset time period under the condition that T0 is less than or equal to Ta, and the air conditioning system 1000 operates in the mode 5 under the condition that T0 is more than Ta.

It can be appreciated that after the second preset time period of the operation mode 9 of the air conditioning system 1000, when the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta, that is, when a proper amount of mechanical cold source and cold storage cold source can meet the cooling requirement of the air conditioning system 1000, the operation mode 9 is continued for the second preset time period to utilize the mechanical cold source and the cold storage cold source to jointly supply cold for the load, so that the energy consumption of the air conditioning system 1000 is reduced to a certain extent.

When the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when a proper amount of mechanical cold sources and cold storage cold sources cannot meet the cooling requirement of the air conditioning system 1000, the operation mode 5 uses more mechanical cold sources to completely replace the natural cold sources to supply the cooling for the load, so that the cooling requirement of the load is met to a certain extent.

In certain embodiments, referring to fig. 1 and 2, after having cooled the compressor 104 to the second heat exchanger 201, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 to continue to cool the compressor 104 to the second heat exchanger 201 if Tb < T0 is less than or equal to Ta after the compressor 104 is operated at the second power, the compressor 104 is operated at the second power;

After the compressor 104 is cooled by the second heat exchanger 201, and the compressor 104 is operated at the second power, if T0> Ta, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 to cause the compressor 104+ cold storage device 203 to cool the second heat exchanger 201 for a third preset period of time, and the compressor 104 is operated at the third power;

After the compressor 104 is made to cool the second heat exchanger 201, if T0 is less than or equal to Tb and T is less than or equal to T1, or T0 is less than or equal to Tb and T is greater than or equal to T2, entering a cooling+cold storage mode after the compressor 104 is operated at the second power;

In the cooling+cold storage mode, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 to cause the compressor 104 to cool the second heat exchanger 201, and control the second switching assembly 204 to cause the cold storage device 203 to store the cold of the first heat exchanger 101.

Specifically, when the air conditioning system 1000 is in mode 5, the air conditioning system 1000 continues to operate in mode 5 if Tb < T0. Ltoreq.Ta, the air conditioning system 1000 operates in mode 10 for a third preset period of time if T0> Ta, or the air conditioning system 1000 operates in mode 6 if T0. Ltoreq.Tb and t≤t1, or T0. Ltoreq.Tb and t≤t2.

It can be appreciated that when the air conditioning system 1000 is in the mode 5, the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta and is greater than the second set temperature Tb, that is, when the cooling capacity of the natural cooling source is insufficient and the cooling requirement of the air conditioning system 1000 is moderate, the mode 5 is continuously operated to utilize the mechanical cooling source as the load for cooling, so as to reduce the energy consumption of the air conditioning system 1000 to a certain extent.

When the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the cooling requirement of the air conditioning system 1000 is high, the third preset duration of the operation mode 10 can fully utilize the mechanical cooling source, and further utilize the cold storage cooling source to supply cold for the load, so that the energy consumption of the air conditioning system 1000 is reduced to a certain extent while the cooling requirement of the load is satisfied.

When the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is less than or equal to the second set temperature Tb and T is less than or equal to T1, or T0 is less than or equal to Tb and T is greater than or equal to T2, that is, when the cooling capacity of the natural cooling source is insufficient and the cooling demand of the air conditioning system 1000 is low and within a set period of time, the operation mode 6 can meet the time demand, and fully utilize the cooling capacity of the surplus mechanical cooling source to supply cooling for the cold storage device 203 while fully utilizing the cooling capacity of the surplus mechanical cooling source to supply cooling for the cold storage device 203 so as to store the surplus cooling capacity of the mechanical cooling source as a standby, further fully utilize the mechanical cooling source and reduce the energy consumption of the air conditioning system 1000.

Optionally, the third power is equal to the second power.

The third preset time period may be set according to factors such as the environment, cooling requirements, and performance of the air conditioning system 1000. Illustratively, the third predetermined time period is 5 minutes (min).

In some embodiments, referring to fig. 1 and 2, after the compressor 104 is caused to cool the second heat exchanger 201 and the second switching assembly 204 is controlled to cause the cold storage device 203 to store the cooling capacity of the first heat exchanger 101, if T0 is less than or equal to Ta, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 to continue to cause the compressor 104 to cool the second heat exchanger 201 and control the second switching assembly 204 to cause the cold storage device 203 to store the cooling capacity of the first heat exchanger 101;

After the compressor 104 is configured to cool the second heat exchanger 201 and the second switching assembly 204 is controlled to cause the cold storage device 203 to store the cooling capacity of the first heat exchanger 101, if T0> Ta, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 to cause the compressor 104+ cold storage device 203 to cool the second heat exchanger 201 for a third preset period of time, and the compressor 104 is operated at a third power.

In the above embodiment, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 and the first set temperature Ta, and the cold-storage cold source is further dynamically adjusted to ensure the cooling effect according to the further surplus and shortage of the mechanical cold source, so that the use and energy efficiency adjustment of the cold source are optimized, the cooling requirement of the load is met to a certain extent, and the energy consumption of the air conditioning system 1000 is reduced.

Specifically, when the air conditioning system 1000 is in mode 6, the air conditioning system 1000 continues to operate in mode 6 if T0 is less than or equal to Ta, and the air conditioning system 1000 operates in mode 10 for a third preset period of time if T0 is greater than or equal to Ta.

It can be understood that when the air conditioning system 1000 is in the mode 6, when the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta, that is, when the mechanical cold source still has surplus cold energy, the mode 6 is continuously operated to fully utilize the mechanical cold source to supply cold for the load, and simultaneously, the surplus cold energy of the mechanical cold source is utilized to supply cold for the cold storage device 203 so that the surplus cold energy of the mechanical cold source is stored by the cold storage device 203 as standby, so that the mechanical cold source is further fully utilized, and the energy consumption of the air conditioning system 1000 is reduced.

When the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the cooling capacity of the mechanical cooling source is insufficient, the third preset duration of the operation mode 10 can fully utilize the mechanical cooling source, and further utilize the cold storage cooling source to supply cold for the load, so that the energy consumption of the air conditioning system 1000 is reduced to a certain extent while the cooling requirement of the load is met.

When the air conditioning system 1000 is in the mode 6, if T0> Ta, the air conditioning system 1000 is switched from the mode 6 to the mode 10, that is, from the mode 6 of the cooling+cold storage mode to the mode 10 of the cooling mode, and at this time, the fluorine pump 103 of the air conditioning refrigeration system 100 remains unchanged, the cold storage heat exchange system 200 is configured to stop storing the cold amount and then to supply the cold to the second heat exchanger 201.

It will be appreciated that in fig. 2, when the air conditioning system 1000 is in mode 6, in the case of T0> Ta, the air conditioning system 1000 is first switched to mode 5, i.e. the fluorine pump 103 of the air conditioning refrigeration system 100 remains unchanged, the cold storage heat exchange system 200 is first configured to stop storing cold, and since T0> Ta is still satisfied at this time, the air conditioning system 1000 is switched from mode 5 to mode 10, i.e. the cold storage heat exchange system 200 is again configured to supply cold to the second heat exchanger 201.

In some embodiments, referring to fig. 1 and 2, after the compressor 104+ cold storage device 203 is caused to cool the second heat exchanger 201 for a third preset period of time, if T0 is less than or equal to Ta, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 to continue to cause the compressor 104+ cold storage device 203 to cool the second heat exchanger 201 for the third preset period of time;

After the compressor 104+ cold storage device 203 is allowed to cool the second heat exchanger 201 for a third preset period of time, if T0> Ta, the air conditioning system 1000 is configured to control the compressor 104 to operate at the fourth power until T0 is less than or equal to Ta;

wherein the third power is less than the fourth power.

Specifically, after the air conditioning system 1000 operates in the mode 10 for a third preset period of time, the air conditioning system 1000 continues to operate in the mode 10 for the third preset period of time if T0 is less than or equal to Ta, and if T0> Ta, the air conditioning system 1000 is configured to control the compressor 104 to operate at a fourth greater power until T0 is less than or equal to Ta.

It will be appreciated that operating the compressor 104 at a greater fourth power may increase the cooling capacity of the mechanical heat sink.

It can be appreciated that after the third preset time period of the operation mode 10 of the air conditioning system 1000, when the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is less than or equal to the first set temperature Ta, that is, when the mechanical cooling source and the cold storage cooling source can meet the cooling requirement of the air conditioning system 1000, the operation mode 10 is continued for the third preset time period to utilize the mechanical cooling source and the cold storage cooling source to jointly supply the cooling for the load, so that the energy consumption of the air conditioning system 1000 is reduced to a certain extent.

When the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is greater than the first set temperature Ta, that is, when the mechanical cooling source and the cold storage cooling source cannot meet the cooling requirement of the air conditioning system 1000, the compressor 104 is controlled to operate with the fourth power greater until T0 is less than or equal to Ta, so that more mechanical cooling sources can be further increased to supply cooling for the load, and the cooling requirement of the load is ensured to be met to a certain extent.

In some embodiments, referring to fig. 1 and 2, after controlling the compressor 104 to operate at the fourth power until t0+.ta, if T0> Tb, the air conditioning system 1000 is configured to control the first switching assembly 106 and the second switching assembly 204 to cool the compressor 104 to the second heat exchanger 201, and the compressor 104 operates at the second power;

after controlling the compressor 104 to operate at the fourth power until T0 is less than or equal to Ta, if T0 is less than or equal to Tb and T is less than or equal to T1, or T0 is less than or equal to Tb and T is more than or equal to T2, entering a cold supply and accumulation mode;

In the above embodiment, the air conditioning system 1000 is operated in different modes according to the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 and the second set temperature Tb, and the mechanical cooling source is dynamically adjusted according to the level and time of the cooling requirement of the air conditioning system 1000 to ensure the cooling effect and meet the time requirement, so that the use and energy efficiency adjustment of the cooling source are optimized, the cooling requirement of the load is met to a certain extent, and the energy consumption of the air conditioning system 1000 is reduced.

Specifically, air conditioning system 1000 operates mode 5 for air conditioning system 1000 in the case of T0> Tb, or operates mode 6 for air conditioning system 1000 in the case of T0. Ltoreq.Tb and t≤t1, or T0. Ltoreq.Tb and t≥t2 after compressor 104 is controlled to operate at a fourth greater power to add more mechanical heat sink.

It can be appreciated that after the compressor 104 is controlled to operate at the fourth power to add more mechanical cooling sources, the air conditioning system 1000 operates in the mode 5 when the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is greater than the second set temperature Tb, that is, when the cooling requirement of the air conditioning system 1000 is moderate, and the mechanical cooling sources are used to cool the load, so as to reduce the energy consumption of the air conditioning system 1000 to a certain extent.

When the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is less than or equal to the second set temperature Tb and T is less than or equal to T1, or when the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is less than or equal to the second set temperature Tb and T is greater than or equal to T2, that is, when the cooling demand of the air conditioning system 1000 is low and the set time period is within, the operation mode 6 can meet the time demand, and fully utilize the mechanical cooling source to supply the load with the cooling capacity surplus to supply the cooling capacity surplus to the cooling storage device 203 so that the cooling storage device 203 stores the cooling capacity surplus as a standby, thereby reducing the energy consumption of the air conditioning system 1000.

Referring to fig. 2 to 12, an embodiment of the present invention provides a control method of an air conditioning system 1000, the air conditioning system 1000 includes an air conditioning refrigeration system 100 and a cold-storage heat exchange system 200, the air conditioning refrigeration system 100 and the cold-storage heat exchange system 200 are connected through a first heat exchanger 101, the cold-storage heat exchange system 200 includes a cold-storage device 203 and a second heat exchanger 201 for exchanging heat with a load, the air conditioning refrigeration system 100 includes a natural cold source and a mechanical cold source, and the cold-storage heat exchange system 200 includes a cold-storage cold source;

The control method comprises the following steps:

According to the current signal, the temperature of the cooling liquid at the inlet of the second heat exchanger 201 and the ambient temperature, the air-conditioning refrigeration system 100 and the cold-storage heat exchange system 200 are controlled to cool the second heat exchanger 201 by at least one of the natural cold source, the mechanical cold source and the cold-storage cold source, the air-conditioning refrigeration system 100 is controlled to cool the cold-storage device 203 by at least one of the natural cold source and the mechanical cold source, and the cold-storage heat exchange system 200 is controlled to cool the second heat exchanger 201 by the cold-storage cold source.

In the above control method, the air conditioning refrigeration system 100 and the cold storage heat exchange system 200 may utilize at least one of a natural cold source, a mechanical cold source and a cold storage cold source to cool the second heat exchanger 201, and utilize at least one of a natural cold source and a mechanical cold source to cool the cold storage device 203, so as to implement flexible switching and efficient operation of multiple operation modes, which is beneficial to energy allocation and reduction of energy consumption of the air conditioning system 1000.

Specifically, the air conditioning system 1000 is an apparatus for adjusting temperature. A load is a facility for centrally storing, managing and handling large amounts of data, which during operation generates large amounts of heat that may affect the normal operation of the load and even the environment and personnel safety. In order to effectively reduce the energy consumption of the air conditioning system 1000, the embodiment of the invention provides a control method, which can ensure the normal operation of the load to a certain extent, and can reduce the energy consumption of the air conditioning system 1000 to a certain extent, thereby reducing the load PUE and reducing the long-term operation cost of the load.

The first heat exchanger 101 and the second heat exchanger 201 are devices for transferring heat (i.e., transferring cold) between different mediums. The first heat exchanger 101 may exchange heat between the air conditioning refrigeration system 100 and the cold storage heat exchange system 200. The second heat exchanger 201 may exchange heat between the cold storage heat exchange system 200 and the load.

It should be noted that, the control method according to the embodiment of the present invention may be applied to various loads needing temperature control, where the data center belongs to an application scenario common in the art, but this should not be considered as a specific limitation of the present invention.

In some embodiments, referring to fig. 2 and 3, the control method includes:

Step S01, when the current signal is normal, controlling the air-conditioning refrigeration system 100 and the cold-storage heat-exchange system 200 to cool at least one of the natural cold source, the mechanical cold source and the cold-storage cold source for the second heat exchanger 201 and controlling the air-conditioning refrigeration system 100 to cool at least one of the natural cold source and the mechanical cold source for the cold-storage device 203 according to the temperature of the cooling liquid at the inlet of the second heat exchanger 201 and the ambient temperature;

In step S02, when the current signal is interrupted, the cold-storage heat exchange system 200 is controlled to cool the cold-storage heat source for the second heat exchanger 201.

In the above embodiment, when the current signal is interrupted, the cold-storage heat exchange system 200 is controlled to make the cold-storage cold source supply cold for the second heat exchanger 201, which is beneficial to realizing the uninterrupted cooling requirement of the load.

Specifically, when the current signal is interrupted, that is, when the air conditioning system 1000 is powered off, the cold accumulation cold source can play a role of an emergency cold source function. At this time, the air conditioning refrigeration system 100 stops operating, and the air conditioning system 1000 is controlled to operate in mode 7. During mode 7 of operation of the air conditioning system 1000, the water pump 202 may be powered by an emergency power source, such as a UPS (Uninterruptible Power Supply ). It will be appreciated that emergency power supplies are typically small in capacity and cannot support the normal operation of the entire air conditioning system 1000 for extended periods of time.

When the current signal is normal, that is, when the air conditioning system 1000 is powered on, different cold sources or cold source combinations can be made according to the requirements, so that the air conditioning system 1000 can operate in different modes.

In fig. 2, when the current signal e=1, it indicates that the current signal is interrupted, that is, the air conditioning system 1000 is in the power-off state, and when the current signal e=0, it indicates that the current signal is normal, that is, the air conditioning system 1000 is in the power-on state.

In some embodiments, please refer to fig. 2 to 13, step S01 includes:

step S1, under the condition that T0-T1> T', controlling the air-conditioning refrigeration system 100 to enable the natural cold source to cool the second heat exchanger 201;

Step S2, under the condition that T "< T0-T1 is less than or equal to T', controlling the air conditioner refrigerating system 100 to enable the natural cold source and the mechanical cold source to supply cold for the second heat exchanger 201, and enabling the mechanical cold source to operate at the first power;

Step S3, under the condition that T0-T1 is less than or equal to T', controlling the air conditioning refrigeration system 100 to enable the mechanical cold source to cool the second heat exchanger 201, and enabling the mechanical cold source to operate at a second power;

Specifically, when the air conditioning system 1000 is in an energized state, the air conditioning system 1000 is controlled to operate in a mode 1 under the condition that T0-T1> T ', the air conditioning system 1000 is controlled to operate in a mode 3 under the condition that T "< T0-T1. Ltoreq.T', and the air conditioning system 1000 is controlled to operate in a mode 5 under the condition that T0-T1. Ltoreq.T".

The first set point T' may be set according to factors such as the environment, cooling requirements, and performance of the air conditioning system 1000. Illustratively, in fig. 2, the first set value T' =10 ℃.

The second set point T "may be set according to factors such as the environment, cooling requirements, and performance of the air conditioning system 1000. Illustratively, in fig. 2, the second set value T "=5°.

In some embodiments, referring to fig. 4, the control method includes:

after step S1:

step S11, if Tb is less than or equal to T0 and less than or equal to Ta, controlling the air conditioner refrigeration system 100 to continuously enable the natural cold source to cool the second heat exchanger 201;

step S12, if T0> Ta, controlling the air conditioner refrigeration system 100 and the cold accumulation heat exchange system 200 to enable the natural cold source and the cold accumulation cold source to cool the second heat exchanger 201 for a first preset time period;

step S13, if T0 is less than or equal to Tb, entering a cooling and cold accumulation mode;

in the cooling+cold storage mode, the air conditioning refrigeration system 100 is controlled to cool the second heat exchanger 201, and the air conditioning system 1000 is controlled to cool the cold storage device 203;

Specifically, when the air conditioning system 1000 is in the mode 1, the air conditioning system 1000 is controlled to continue to operate in the mode 1 under the condition that Tb < T0 is less than or equal to Ta, the air conditioning system 1000 is controlled to operate in the mode 8 for a first preset time period under the condition that T0 is more than or equal to Ta, and the air conditioning system 1000 is controlled to operate in the mode 2 under the condition that T0 is less than or equal to Tb.

In some embodiments, referring to fig. 5, the control method includes:

after step S13:

step S131, if T0 is less than or equal to Ta, controlling the air conditioning refrigeration system 100 to continuously cool the natural cold source for the second heat exchanger 201, and controlling the air conditioning system 1000 to continuously cool the natural cold source for the cold storage device 203;

In step S132, if T0> Ta, the air conditioning refrigeration system 100 and the cold storage heat exchange system 200 are controlled to cool the natural cooling source and the cold storage cooling source for the first preset period of time in the second heat exchanger 201.

Specifically, when the air conditioning system 1000 is in the mode 2, the air conditioning system 1000 is controlled to continue to operate in the mode 2 under the condition that T0 is less than or equal to Ta, and the air conditioning system 1000 is controlled to operate in the mode 8 for a first preset time period under the condition that T0 is more than or equal to Ta.

When the air conditioning system 1000 is in the mode 2, if T0> Ta, the air conditioning system 1000 is switched from the mode 2 to the mode 8, that is, from the mode 2 of the cooling+cold storage mode to the mode 8 of the cooling mode, at this time, the fluorine pump 103 of the air conditioning refrigeration system 100 is kept unchanged, the cold storage heat exchange system 200 is controlled to stop storing the cold amount, and then the cold storage device 200 is controlled to supply the cold to the second heat exchanger 201.

It will be appreciated that in fig. 2, when the air conditioning system 1000 is in the mode 2, in the case of T0> Ta, the air conditioning system 1000 is first switched to the mode 1, that is, the fluorine pump 103 of the air conditioning refrigeration system 100 is kept unchanged, the cold-storage heat exchange system 200 is first controlled to stop storing the cold, and the air conditioning system 1000 is switched from the mode 1 to the mode 8, that is, the cold-storage heat exchange system 200 is controlled to supply the cold to the second heat exchanger 201 again because T0> Ta is still satisfied at this time.

In some embodiments, referring to fig. 6, the control method includes:

After step S12 and step S132:

Step S121, if T0 is less than or equal to Ta, controlling the air conditioner refrigeration system 100 and the cold accumulation heat exchange system 200 to continuously enable the natural cold source and the cold accumulation cold source to cool the second heat exchanger 201 for a first preset time period;

in step S122, if T0> Ta, the air conditioning and refrigerating system 100 is controlled to cool the natural cooling source and the mechanical cooling source for the second heat exchanger 201, and the mechanical cooling source operates at the first power.

Specifically, after the air conditioning system 1000 operates in the mode 8 for a first preset time period, the air conditioning system 1000 is controlled to continue to operate in the mode 8 for the first preset time period under the condition that T0 is less than or equal to Ta, and the air conditioning system 1000 is controlled to operate in the mode 3 under the condition that T0 is more than Ta.

In some embodiments, referring to fig. 7, the control method includes:

After step S2 and step S122 (not shown):

Step S21, if Tb is less than or equal to Ta and T0 is less than or equal to Ta, controlling the air conditioning and refrigerating system 100 to continuously enable the natural cold source and the mechanical cold source to cool the second heat exchanger 201, and enabling the mechanical cold source to operate at the first power;

step S22, if T0> Ta, controlling the air conditioner refrigeration system 100 and the cold accumulation heat exchange system 200 to enable the natural cold source, the mechanical cold source and the cold accumulation cold source to cool the second heat exchanger 201 for a second preset time period;

S23, if T0 is less than or equal to Tb and T is less than or equal to T1, or T0 is less than or equal to Tb and T is more than or equal to T2, entering a cooling and cold accumulation mode;

In the cooling and cold storage mode, the air conditioning refrigeration system 100 is controlled to cool the second heat exchanger 201 by the natural cooling source and the mechanical cooling source, and the air conditioning system 1000 is controlled to cool the cold storage device 203 by the natural cooling source and the mechanical cooling source;

Specifically, when the air conditioning system 1000 is in the mode 3, the air conditioning system 1000 is controlled to continue to operate in the mode 3 under the condition that Tb < T0 is less than or equal to Ta, the air conditioning system 1000 is controlled to operate in the mode 9 for a second preset time period under the condition that T0 is more than or equal to Ta, and the air conditioning system 1000 is controlled to operate in the mode 4 under the condition that T0 is less than or equal to Tb and T is less than or equal to T1 or under the condition that T0 is less than or equal to Tb and T is more than or equal to T2.

When the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is less than or equal to the second set temperature Tb and T is less than or equal to T1, or when the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is less than or equal to the second set temperature Tb and T is greater than or equal to T, that is, when the cooling demand of the air conditioning system 1000 is low and the set time period is set, the operation mode 4 can meet the time demand, and the natural cooling source and the mechanical cooling source are fully utilized to supply the load cooling, and simultaneously, the surplus cooling capacity of the natural cooling source and the mechanical cooling source is utilized to supply the cooling capacity of the cold storage device 203 to facilitate the cold storage device 203 to store the surplus cooling capacity of the natural cooling source and the mechanical cooling source as the standby, so that the natural cooling source and the mechanical cooling source are fully utilized, and the energy consumption of the air conditioning system 1000 is reduced.

In some embodiments, referring to fig. 8, the control method includes:

After step S23:

step S231, if T0 is less than or equal to Ta, controlling the air conditioning refrigeration system 100 to continuously cool the natural cold source and the mechanical cold source for the second heat exchanger 201, and controlling the air conditioning system 1000 to continuously cool the natural cold source and the mechanical cold source for the cold storage device 203;

In step S232, if T0> Ta, the air conditioning refrigeration system 100 and the cold storage heat exchange system 200 are controlled to cool the natural cooling source, the mechanical cooling source and the cold storage cooling source for the second heat exchanger 201 for a second preset period of time.

Specifically, when the air conditioning system 1000 is in the mode 4, the air conditioning system 1000 is controlled to continue to operate in the mode 4 under the condition that T0 is less than or equal to Ta, and the air conditioning system 1000 is controlled to operate in the mode 9 for a second preset time period under the condition that T0 is more than Ta.

When the air conditioning system 1000 is in the mode 4, if T0> Ta, the air conditioning system 1000 is switched from the mode 4 to the mode 9, that is, from the mode 4 of the cooling+cold storage mode to the mode 9 of the cooling mode, at this time, the fluorine pump 103 of the air conditioning refrigeration system 100 is kept unchanged, the cold storage heat exchange system 200 is controlled to stop storing the cold amount, and then the cold storage device 200 is controlled to supply the cold to the second heat exchanger 201.

It will be appreciated that in fig. 2, when the air conditioning system 1000 is in the mode 4, in the case of T0> Ta, the air conditioning system 1000 is first switched to the mode 3, that is, the fluorine pump 103 of the air conditioning refrigeration system 100 remains unchanged, the cold-storage heat exchange system 200 is first controlled to stop storing the cold, and the air conditioning system 1000 is switched from the mode 3 to the mode 9, that is, the cold-storage heat exchange system 200 is controlled to supply the cold to the second heat exchanger 201 again because T0> Ta is still satisfied at this time.

In some embodiments, referring to fig. 9, the control method includes:

After step S22 and step S232:

Step S221, if T0 is less than or equal to Ta, controlling the air conditioning refrigeration system 100 and the cold accumulation heat exchange system 200 to continuously enable the natural cold source, the mechanical cold source and the cold accumulation cold source to cool the second heat exchanger 201 for a second preset time period;

In step S222, if T0> Ta, the air conditioning and refrigerating system 100 is controlled to cool the mechanical cooling source for the second heat exchanger 201, and the mechanical cooling source operates at the second power.

Specifically, after the air conditioning system 1000 operates in the mode 9 for a second preset time period, the air conditioning system 1000 is controlled to continue to operate in the mode 9 for the second preset time period under the condition that T0 is less than or equal to Ta, and the air conditioning system 1000 is controlled to operate in the mode 5 under the condition that T0 is more than Ta.

In some embodiments, referring to fig. 10, the control method includes:

After step S3 and step S222 (not shown):

step S31, if Tb is less than or equal to Ta and T0, controlling the air conditioning and refrigerating system 100 to continuously enable the mechanical cold source to cool the second heat exchanger 201, and enabling the mechanical cold source to operate with second power;

step S32, if T0> Ta, controlling the air conditioner refrigeration system 100 and the cold accumulation heat exchange system 200 to enable the cold accumulation cold source and the mechanical cold source to cool the second heat exchanger 201 for a third preset duration, wherein the mechanical cold source operates with a third power;

S33, if T0 is less than or equal to Tb and T is less than or equal to T1, or T0 is less than or equal to Tb and T is more than or equal to T2, entering a cooling and cold accumulation mode;

In the cooling+cold storage mode, the air conditioning refrigeration system 100 is controlled to cool the second heat exchanger 201, and the air conditioning system 1000 is controlled to cool the cold storage device 203.

Specifically, when the air conditioning system 1000 is in the mode 5, the air conditioning system 1000 is controlled to continue to operate in the mode 5 under the condition that Tb < T0 is less than or equal to Ta, the air conditioning system 1000 is controlled to operate in the mode 10 for a third preset time period under the condition that T0 is more than or equal to Ta, and the air conditioning system 1000 is controlled to operate in the mode 6 under the condition that T0 is less than or equal to Tb and T is less than or equal to T1 or under the condition that T0 is less than or equal to Tb and T is more than or equal to T2.

When the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is less than or equal to the second set temperature Tb and T is less than or equal to T1, or when the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is less than or equal to the second set temperature Tb and T is greater than or equal to T2, that is, when the cooling capacity of the natural cooling source is insufficient and the cooling demand of the air conditioning system 1000 is low and in a set period of time, the operation mode 6 can meet the time demand, and the excessive cooling capacity of the mechanical cooling source is fully utilized to supply cooling for the cold storage device 203 so that the excessive cooling capacity of the mechanical cooling source is conveniently stored as a standby by the cold storage device 203, so that the mechanical cooling source is further fully utilized, and the energy consumption of the air conditioning system 1000 is reduced.

Optionally, the third power is equal to the second power.

In some embodiments, referring to fig. 11, the control method includes:

After step S33:

Step S331, if T0 is less than or equal to Ta, controlling the air conditioning refrigeration system 100 to continue to cool the mechanical cold source for the second heat exchanger 201, and controlling the air conditioning system 1000 to continue to cool the mechanical cold source for the cold storage device 203;

in step S332, if T0> Ta, the air conditioning refrigeration system 100 and the cold-storage heat exchange system 200 are controlled to make the cold-storage heat source and the mechanical heat source supply cold to the second heat exchanger 201 for a third preset period of time, and the mechanical heat source operates at a third power.

Specifically, when the air conditioning system 1000 is in the mode 6, the air conditioning system 1000 is controlled to continue to operate in the mode 6 under the condition that T0 is less than or equal to Ta, and the air conditioning system 1000 is controlled to operate in the mode 10 for a third preset time period under the condition that T0 is more than Ta.

When the air conditioning system 1000 is in the mode 6, if T0> Ta, the air conditioning system 1000 is switched from the mode 6 to the mode 10, that is, from the mode 6 of the cooling+cold storage mode to the mode 10 of the cooling mode, at this time, the fluorine pump 103 of the air conditioning refrigeration system 100 is kept unchanged, the cold storage heat exchange system 200 is controlled to stop storing the cold amount, and then the cold storage device 200 is controlled to supply the cold to the second heat exchanger 201.

It will be appreciated that in fig. 2, when the air conditioning system 1000 is in the mode 6, in the case of T0> Ta, the air conditioning system 1000 is first switched to the mode 5, that is, the fluorine pump 103 of the air conditioning refrigeration system 100 is kept unchanged, the cold-storage heat exchange system 200 is first controlled to stop storing the cold, and the air conditioning system 1000 is switched from the mode 5 to the mode 10, that is, the cold-storage heat exchange system 200 is controlled to supply the cold to the second heat exchanger 201 again because T0> Ta is still satisfied at this time.

In some embodiments, referring to fig. 12, the control method includes:

after step S32 and step S332:

Step S321, if T0 is less than or equal to Ta, controlling the air conditioner refrigeration system 100 and the cold accumulation heat exchange system 200 to continuously enable the cold accumulation cold source and the mechanical cold source to cool the second heat exchanger 201 for a third preset duration, and enabling the mechanical cold source to operate at a third power;

Step S322, if T0> Ta, controlling the air conditioning refrigeration system 100 to cool the mechanical cold source for the second heat exchanger 201 until T0 is less than or equal to Ta, wherein the mechanical cold source operates at a fourth power;

wherein the third power is less than the fourth power.

Specifically, after the third preset time period of the operation mode 10 of the air conditioning system 1000, the air conditioning system 1000 is controlled to continue to operate the operation mode 10 for the third preset time period under the condition that T0 is less than or equal to Ta, and under the condition that T0 is more than or equal to Ta, the air conditioning system 1000 is controlled to be configured to control the compressor 104 to operate with a fourth larger power until T0 is less than or equal to Ta.

In some embodiments, referring to fig. 13, the control method includes:

after step S322:

Step S3221, if T0> Tb, controlling the air conditioning refrigeration system 100 to cool the mechanical cold source for the second heat exchanger 201, wherein the mechanical cold source operates with the second power;

s3222, if T0 is less than or equal to Tb and T is less than or equal to T1, or T0 is less than or equal to Tb and T is more than or equal to T2, entering a cooling and cold accumulation mode;

Specifically, after the compressor 104 is controlled to operate at the fourth larger power to add more mechanical heat sinks, the air conditioning system 1000 is controlled to operate in the mode 5 if T0> Tb, and in the mode 6 if T0 is less than or equal to Tb and T is less than or equal to T1, or if T0 is less than or equal to Tb and T is greater than or equal to T2.

It can be appreciated that after the compressor 104 is controlled to operate at the fourth power to add more mechanical cooling sources, when the temperature T0 of the cooling liquid at the inlet of the second heat exchanger 201 is greater than the second set temperature Tb, that is, when the cooling requirement of the air conditioning system 1000 is moderate, the air conditioning system 1000 operates in the mode 5, and the mechanical cooling sources are used to supply the cooling for the load, so as to reduce the energy consumption of the air conditioning system 1000 to a certain extent.

In certain embodiments, referring to fig. 1, an air conditioning refrigeration system 100 includes a refrigerant circuit, a fluorine pump 103, a compressor 104, and a first switching assembly 106, the first switching assembly 106 being coupled to the refrigerant circuit, the fluorine pump 103, and the compressor 104, the first switching assembly 106 being configured to control the fluorine pump 103 and the compressor 104 to access and remove refrigerant circuit;

The cold storage heat exchange system 200 comprises a cooling liquid circuit, a cold storage device 203 and a second switching assembly 204, wherein the cooling liquid circuit and the refrigerant circuit are connected through the first heat exchanger 101, the cooling liquid circuit comprises a second heat exchanger 201, the second heat exchanger 201 is used for exchanging heat with a load, the second switching assembly 204 is connected with the cold storage device 203, the first heat exchanger 101 and the second heat exchanger 201, and the second switching assembly 204 is configured to control the cold storage device 203 to be connected into the cooling liquid circuit and to be moved out of the cooling liquid circuit.

In the above embodiment, on the one hand, the air conditioning refrigeration system 100 may utilize the cooperation of the fluorine pump 103, the compressor 104 and the first switching assembly 106 to provide the cooling capacity to the first heat exchanger 101 by using the natural cooling source and/or the mechanical cooling source of the compressor 104, and on the other hand, the cold storage heat exchange system 200 may utilize the cooperation of the cold storage device 203 and the second switching assembly 204 to enable the cold storage device 203 to store the cooling capacity of the first heat exchanger 101 and supply the cooling capacity to the second heat exchanger 201, so that the energy consumption of the air conditioning system 1000 may be reduced to some extent.

Specifically, the air conditioning refrigeration system 100 includes a fluorine pump 103, a compressor 104, a refrigerant circuit, and a first switching assembly 106. The refrigerant circuit may include a third heat exchanger 102, a throttle 105, a first heat exchanger 101.

The third heat exchanger 102 is a device for transferring heat (i.e. transferring cold) between different media. The third heat exchanger 102 may exchange heat between the natural heat source and the refrigerant circulating in the refrigerant circuit. Wherein, the natural cold source can be low-temperature air, low-temperature water or other low-temperature substances in nature.

The fluorine pump 103 is used to circulate and convey the refrigerant in the refrigerant circuit. The water pump 202 is used to circulate and convey the coolant in the coolant circuit. In the present invention, the water pump 202 and the fluorine pump 103 are common terms in the art, and should not be construed as limiting the refrigerant and the cooling liquid.

The temperature of the coolant changes (increases or decreases) while the coolant flows in the coolant circuit, but substantially no phase change occurs. The cooling fluid includes, but is not limited to, water, glycol, mixtures thereof (e.g., glycol-water mixtures), and the like.

In certain embodiments, referring to fig. 1, the first switching assembly 106 includes a first valve 107 and a second valve 108;

One end of the first valve 107 is connected with an inlet of the fluorine pump 103, the other end is connected with an outlet of the fluorine pump 103, and the first switching component 106 is configured to enable the fluorine pump 103 to move out of the refrigerant circuit when the first valve 107 is opened;

One end of the second valve 108 is connected to the inlet of the compressor 104 and the other end is connected to the outlet of the compressor 104, and the first switching assembly 106 is configured to move the compressor 104 out of the refrigerant circuit with the second valve 108 open and to switch the compressor 104 into the refrigerant circuit with the second valve 108 closed.

In some embodiments, referring to fig. 1, the second switching assembly 204 includes a first valve assembly 205 and a second valve assembly 206;

A first valve assembly 205 is connected to the outlet of the first heat exchanger 101, the inlet of the cold storage device 203 and the inlet of the second heat exchanger 201, the first valve assembly 205 being configured to control whether the cooling liquid flowing out of the first heat exchanger 101 flows into the cold storage device 203;

a second valve assembly 206 is connected to the outlet of the cold storage device 203, the inlet and outlet of the second heat exchanger 201 and the inlet of the first heat exchanger 101, the second valve assembly 206 being configured to control whether the cooling liquid flowing out of the cold storage device 203 flows back to the first heat exchanger 101 through the second heat exchanger 201.

Referring to fig. 14, a control device 2 of an air conditioning system 1000 according to an embodiment of the present invention includes a processor 22 and a memory 21, and the memory 21 stores a computer program, and when the computer program is executed by the processor 22, the steps of the control method according to any of the above embodiments are implemented.

Referring to fig. 14, an embodiment of the present invention provides an air conditioning system 1000 including the control device of the above embodiment.

Specifically, the control device 2 may be electrically connected to the air conditioning refrigeration system 100 and the cold storage heat exchange system 200, and is used to control the air conditioning refrigeration system 100 and the cold storage heat exchange system 200 to implement the control method of any one of the foregoing embodiments.

The control device 2 can control the operation of the fluorine pump 103 and the compressor 104, the switching of the first switching assembly 106 and the second switching assembly 204, the opening degree of the throttle 105, and the like.

An embodiment of the present invention provides a computer-readable storage medium having stored thereon a computer program that, when executed by the processor 22, performs the steps of the control method of any of the above embodiments.

In the description of the present specification, reference is made to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., meaning that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable actions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order from that shown or discussed, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.

Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, combinations, modifications, alternatives and variations of the above embodiments may be made by those skilled in the art within the scope of the invention.

Claims

1. An air conditioning system, characterized in that it comprises:

An air conditioning refrigeration system includes a refrigerant circuit, a refrigerant pump, a compressor, and a first switching component. The first switching component is connected to the refrigerant circuit, the refrigerant pump, and the compressor. The first switching component is configured to control the refrigerant pump and the compressor to connect to and disconnect from the refrigerant circuit.

A cold storage and heat exchange system includes a coolant circuit, a cold storage device, and a second switching component. The coolant circuit and the refrigerant circuit are connected through a first heat exchanger. The coolant circuit includes a second heat exchanger for exchanging heat with a load. The second switching component is connected to the cold storage device, the first heat exchanger, and the second heat exchanger. The second switching component is configured to control the cold storage device to enter and exit the coolant circuit.

When the cold storage device is connected to the coolant circuit, the cold storage device is configured to store the cold energy of the first heat exchanger and to supply cold energy to the second heat exchanger.

The second switching component includes a first valve assembly and a second valve assembly. The first valve assembly is connected to the outlet of the first heat exchanger, the inlet of the cold storage device, and the inlet of the second heat exchanger. The first valve assembly is configured to control whether the coolant flowing out of the first heat exchanger flows into the cold storage device.

The second valve assembly is connected to the outlet of the cold storage device, the inlet and outlet of the second heat exchanger and the inlet of the first heat exchanger. The second valve assembly is configured to control whether the coolant flowing out of the cold storage device flows back to the first heat exchanger through the second heat exchanger.

2. The air conditioning system according to claim 1, wherein the first switching component comprises a first valve and a second valve;

One end of the first valve is connected to the inlet of the refrigerant pump, and the other end is connected to the outlet of the refrigerant pump. The first switching component is configured to remove the refrigerant pump from the refrigerant circuit when the first valve is open, and to connect the refrigerant pump to the refrigerant circuit when the first valve is closed.

One end of the second valve is connected to the inlet of the compressor, and the other end is connected to the outlet of the compressor. The first switching component is configured to remove the compressor from the refrigerant circuit when the second valve is open, and to connect the compressor to the refrigerant circuit when the second valve is closed.

3. The air conditioning system according to claim 1, wherein the first valve assembly includes a third valve and a fourth valve, the third valve being connected to the outlet of the first heat exchanger and the inlet of the cold storage device, and the fourth valve being connected to the outlet of the first heat exchanger and the inlet of the second heat exchanger.

4. The air conditioning system according to claim 1, wherein the second valve assembly includes a fifth valve and a sixth valve, the fifth valve being connected to the outlet of the cold storage device and the outlet of the second heat exchanger, and the sixth valve being connected to the outlet of the cold storage device and the inlet of the second heat exchanger.

5. The air conditioning system according to claim 1, characterized in that the air conditioning system has a cooling mode and a cooling + cold storage mode, wherein in the cooling mode, the air conditioning system is configured to control the first switching component and the second switching component to supply cooling to the second heat exchanger from one of the following cold sources: a refrigerant pump, a compressor, a refrigerant pump + a compressor, a cold storage device, a refrigerant pump + a cold storage device, a compressor + a cold storage device, or a refrigerant pump + a compressor + a cold storage device.

In the cooling + cold storage mode, the air conditioning system is configured to control the first switching component and the second switching component to supply cooling to the second heat exchanger from one of the following cold sources: a refrigerant pump, a compressor, or a refrigerant pump + compressor, and is configured to control the second switching component to store the cold energy of the first heat exchanger in the cold storage device.

6. The air conditioning system according to claim 5, characterized in that,

When the air conditioning system is powered off, the air conditioning system is configured to control the first switching component and the second switching component to make the cold storage device supply cooling to the second heat exchanger;

When the air conditioning system is powered on, the air conditioning system is configured to control the first switching component and the second switching component to supply cooling to the second heat exchanger from one of the following cold sources: a refrigerant pump, a compressor, a refrigerant pump + compressor, a refrigerant pump + cold storage device, a compressor + cold storage device, a refrigerant pump + compressor + cold storage device, and is configured to control the second switching component to store the cold energy of the first heat exchanger in the cold storage device.

7. The air conditioning system according to claim 6, characterized in that,

When T0-T1>T’, the air conditioning system is configured to control the first switching component and the second switching component to make the refrigerant pump supply cooling to the second heat exchanger;

When T’’＜T0-T1≤T’, the air conditioning system is configured to control the first switching component and the second switching component to make the refrigerant pump + compressor supply cooling to the second heat exchanger, and the compressor operates at a first power.

When T0-T1≤T’’, the air conditioning system is configured to control the first switching component and the second switching component to cause the compressor to supply cooling to the second heat exchanger, and the compressor operates at a second power.

Wherein, T0 is the temperature of the coolant at the inlet of the second heat exchanger, T1 is the ambient temperature, T’ is the first set value, T’’ is the second set value, T’>T’’, and the first power is less than the second power.

8. The air conditioning system according to claim 7, characterized in that,

After the refrigerant pump supplies cooling to the second heat exchanger, if Tb < T0 ≤ Ta, the air conditioning system is configured to control the first switching component and the second switching component to continue supplying cooling to the second heat exchanger by the refrigerant pump;

After the refrigerant pump supplies cooling to the second heat exchanger, if T0 > Ta, the air conditioning system is configured to control the first switching component and the second switching component to supply cooling to the second heat exchanger for a first preset duration using the refrigerant pump and cold storage device.

After the fluorine pump supplies cooling to the second heat exchanger, if T0≤Tb, the cooling + cold storage mode is entered.

In the cooling + cold storage mode, the air conditioning system is configured to control the first switching component and the second switching component to make the refrigerant pump supply cooling to the second heat exchanger, and to control the second switching component to make the cold storage device store the cold energy of the first heat exchanger.

Where Ta is the first set temperature, Tb is the second set temperature, and Ta > Tb.

9. The air conditioning system according to claim 8, characterized in that,

After the refrigerant pump supplies cooling to the second heat exchanger and the second switching component is controlled to store the cooling capacity of the first heat exchanger in the cold storage device, if T0≤Ta, the air conditioning system is configured to control the first switching component and the second switching component to continue supplying cooling to the second heat exchanger with the refrigerant pump and to continue controlling the second switching component to store the cooling capacity of the first heat exchanger in the cold storage device.

After the refrigerant pump supplies cooling to the second heat exchanger and the second switching component is controlled to allow the cold storage device to store the cooling capacity of the first heat exchanger, if T0 > Ta, the air conditioning system is configured to control the first switching component and the second switching component to allow the refrigerant pump + cold storage device to supply cooling to the second heat exchanger for the first preset duration.

10. The air conditioning system according to claim 8 or 9, characterized in that,

After the refrigerant pump and cold storage device supply cooling to the second heat exchanger for a first preset time, if T0≤Ta, the air conditioning system is configured to control the first switching component and the second switching component to continue supplying cooling to the second heat exchanger by the refrigerant pump and cold storage device for the first preset time.

After the refrigerant pump and cold storage device supply cooling to the second heat exchanger for a first preset time, if T0 > Ta, the air conditioning system is configured to control the first switching component and the second switching component to supply cooling to the second heat exchanger via the refrigerant pump and compressor, with the compressor operating at a first power.

11. The air conditioning system according to claim 7, characterized in that,

After the refrigerant pump and compressor supply cooling to the second heat exchanger and the compressor operates at a first power, if Tb < T0 ≤ Ta, the air conditioning system is configured to control the first switching component and the second switching component to continue supplying cooling to the second heat exchanger and the compressor operates at a first power.

After the refrigerant pump and compressor supply cooling to the second heat exchanger and the compressor operates at a first power, if T0 > Ta, the air conditioning system is configured to control the first switching component and the second switching component to supply cooling to the second heat exchanger for a second preset duration using the refrigerant pump, compressor and cold storage device.

After the compressor operates at the first power and the fluorine pump supplies cooling to the second heat exchanger, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the cooling supply + cold storage mode is entered.

In the cooling + cold storage mode, the air conditioning system is configured to control the first switching component and the second switching component to make the refrigerant pump + compressor cool the second heat exchanger, and to control the second switching component to make the cold storage device store the cold energy of the first heat exchanger.

Where t is the current time, t1 is the first set time, t2 is the second set time, t∈[0h, 24h], and t1＜t2.

12. The air conditioning system according to claim 11, characterized in that,

After the refrigerant pump and compressor supply cooling to the second heat exchanger and the second switching component is controlled to store the cooling capacity of the first heat exchanger in the cold storage device, if T0≤Ta, the air conditioning system is configured to control the first switching component and the second switching component to continue supplying cooling to the second heat exchanger with the refrigerant pump and compressor, and to control the second switching component to continue storing the cooling capacity of the first heat exchanger in the cold storage device.

After the refrigerant pump and compressor supply cooling to the second heat exchanger, and the second switching component is controlled to allow the cold storage device to store the cooling capacity of the first heat exchanger, if T0 > Ta, the air conditioning system is configured to control the first switching component and the second switching component to allow the refrigerant pump, compressor, and cold storage device to supply cooling to the second heat exchanger for a second preset duration.

13. The air conditioning system according to claim 11 or 12, characterized in that,

After the refrigerant pump + compressor + cold storage device supplies cooling to the second heat exchanger for a second preset time, if T0≤Ta, the air conditioning system is configured to control the first switching component and the second switching component to continue supplying cooling to the second heat exchanger for the second preset time using the refrigerant pump + compressor + cold storage device.

After the refrigerant pump, compressor, and cold storage device supply cooling to the second heat exchanger for a second preset time, if T0 > Ta, the air conditioning system is configured to control the first switching component and the second switching component to supply cooling to the second heat exchanger by the compressor, and the compressor operates at a second power.

14. The air conditioning system according to claim 7, characterized in that,

After the compressor supplies cooling to the second heat exchanger and operates at a second power, if Tb < T0 ≤ Ta, the air conditioning system is configured to control the first switching component and the second switching component to continue supplying cooling to the second heat exchanger and operate at a second power.

After the compressor supplies cooling to the second heat exchanger and operates at a second power, if T0 > Ta, the air conditioning system is configured to control the first switching component and the second switching component to supply cooling to the second heat exchanger for a third preset duration, and the compressor operates at a third power.

After the compressor supplies cooling to the second heat exchanger and operates at the second power, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the cooling + cold storage mode is entered.

In the cooling + cold storage mode, the air conditioning system is configured to control the first switching component and the second switching component to make the compressor cool the second heat exchanger, and to control the second switching component to make the cold storage device store the cold energy of the first heat exchanger.

15. The air conditioning system according to claim 14, characterized in that,

After the compressor supplies cooling to the second heat exchanger and the second switching component is controlled to store the cooling capacity of the first heat exchanger in the cold storage device, if T0≤Ta, the air conditioning system is configured to control the first switching component and the second switching component to continue supplying cooling to the second heat exchanger and to continue controlling the second switching component to store the cooling capacity of the first heat exchanger in the cold storage device.

After the compressor supplies cooling to the second heat exchanger and the second switching component is controlled to allow the cold storage device to store the cooling capacity of the first heat exchanger, if T0 > Ta, the air conditioning system is configured to control the first switching component and the second switching component to allow the compressor + cold storage device to supply cooling to the second heat exchanger for a third preset duration, and the compressor operates at a third power.

16. The air conditioning system according to claim 14 or 15, characterized in that,

After the compressor and cold storage device supply cooling to the second heat exchanger for a third preset time, and the compressor operates at a third power, if T0≤Ta, the air conditioning system is configured to control the first switching component and the second switching component to continue supplying cooling to the second heat exchanger for a third preset time, and the compressor operates at a third power.

After the compressor and cold storage device supply cooling to the second heat exchanger for a third preset time, and the compressor operates at a third power, if T0 > Ta, the air conditioning system is configured to control the compressor to operate at a fourth power until T0 ≤ Ta.

The third power is less than the fourth power.

17. The air conditioning system according to claim 16, characterized in that, after controlling the compressor to operate at a fourth power until T0≤Ta, if T0＞Tb, the air conditioning system is configured to control the first switching component and the second switching component to cause the compressor to supply cooling to the second heat exchanger, and the compressor operates at a second power;

After controlling the compressor to operate at the fourth power until T0≤Ta, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the cooling supply + cold storage mode is entered.

In the cooling + cold storage mode, the air conditioning system is configured to control the first switching component and the second switching component to enable the compressor to cool the second heat exchanger, and to control the second switching component to enable the cold storage device to store the cold energy of the first heat exchanger.

18. A control method for an air conditioning system, characterized in that the air conditioning system includes an air conditioning refrigeration system and a cold storage and heat exchange system, the air conditioning refrigeration system and the cold storage and heat exchange system are connected through a first heat exchanger, the cold storage and heat exchange system includes a cold storage device and a second heat exchanger for exchanging heat with the load, the air conditioning refrigeration system includes a natural cold source and a mechanical cold source, and the cold storage and heat exchange system includes a cold storage cold source.

The control method includes:

Based on the current signal, the temperature of the coolant at the inlet of the second heat exchanger, and the ambient temperature, the air conditioning refrigeration system and the cold storage heat exchange system are controlled to supply cooling to the second heat exchanger by at least one of the natural cold source, the mechanical cold source, and the cold storage cold source, and the air conditioning refrigeration system is controlled to supply cooling to the cold storage device by at least one of the natural cold source and the mechanical cold source, and the cold storage heat exchange system is controlled to supply cooling to the second heat exchanger by the cold storage cold source.

The control method specifically includes:

When the current signal is normal, based on the temperature of the coolant at the inlet of the second heat exchanger and the ambient temperature, the air conditioning refrigeration system and the cold storage heat exchange system are controlled to supply cooling to the second heat exchanger by at least one of the natural cold source, the mechanical cold source and the cold storage cold source, and the air conditioning refrigeration system is controlled to supply cooling to the cold storage device by at least one of the natural cold source and the mechanical cold source.

When the current signal is interrupted, the cold storage and heat exchange system is controlled to supply cooling to the second heat exchanger from the cold storage source.

19. The control method according to claim 18, characterized in that the control method comprises:

When T0-T1>T’, the air conditioning system is controlled to supply cooling to the second heat exchanger from the natural cold source;

When T’’＜T0-T1≤T’, the air conditioning system is controlled to supply cooling to the second heat exchanger by the natural cold source and the mechanical cold source, and the mechanical cold source operates at the first power.

When T0-T1≤T’’, the air conditioning refrigeration system is controlled to supply cooling to the second heat exchanger by the mechanical cold source, and the mechanical cold source operates at the second power.

20. The control method according to claim 19, characterized in that the control method comprises:

After the natural cold source supplies cooling to the second heat exchanger, if Tb < T0 ≤ Ta, the air conditioning system is controlled to continue supplying cooling to the second heat exchanger using the natural cold source.

After the natural cold source supplies cooling to the second heat exchanger, if T0 > Ta, control the air conditioning refrigeration system and the cold storage heat exchange system to supply cooling to the second heat exchanger for a first preset time using the natural cold source and the cold storage cold source.

After the natural cold source supplies cooling to the second heat exchanger, if T0≤Tb, the cooling supply + cold storage mode is entered.

In the cooling + cold storage mode, the air conditioning system is controlled to supply cooling to the second heat exchanger from the natural cold source, and the air conditioning system is also controlled to supply cooling to the cold storage device from the natural cold source.

21. The control method according to claim 20, characterized in that the control method comprises:

After the natural cold source supplies cooling to the second heat exchanger and the air conditioning system is controlled to supply cooling to the cold storage device, if T0≤Ta, the air conditioning system is controlled to continue supplying cooling to the second heat exchanger and the air conditioning system is controlled to continue supplying cooling to the cold storage device.

After the natural cold source supplies cooling to the second heat exchanger and the air conditioning system is controlled to supply cooling to the cold storage device, if T0 > Ta, the air conditioning system and the cold storage heat exchange system are controlled to supply cooling to the second heat exchanger by the natural cold source and the cold storage cold source for a first preset time.

22. The control method according to claim 20 or 21, characterized in that the control method comprises:

After the natural cold source and the cold storage cold source provide cooling to the second heat exchanger for a first preset time, if T0≤Ta, the air conditioning refrigeration system and the cold storage heat exchange system are controlled to continue to provide cooling to the second heat exchanger for the first preset time using the natural cold source and the cold storage cold source.

After the natural cold source and the cold storage cold source provide cooling to the second heat exchanger for a first preset time, if T0 > Ta, the air conditioning refrigeration system is controlled to provide cooling to the second heat exchanger using the natural cold source and the mechanical cold source, with the mechanical cold source operating at a first power.

23. The control method according to claim 19, characterized in that the control method comprises:

After the natural cold source and the mechanical cold source supply cooling to the second heat exchanger, and the mechanical cold source operates at a first power, if Tb < T0 ≤ Ta, the air conditioning refrigeration system is controlled to continue supplying cooling to the second heat exchanger with the natural cold source and the mechanical cold source, and the mechanical cold source operates at the first power.

After the natural cold source and the mechanical cold source supply cooling to the second heat exchanger, and the mechanical cold source operates at a first power, if T0 > Ta, the air conditioning refrigeration system and the cold storage heat exchange system are controlled to supply cooling to the second heat exchanger for a second preset duration by the natural cold source, the mechanical cold source and the cold storage cold source.

After the natural cold source and the mechanical cold source supply cooling to the second heat exchanger, and the mechanical cold source operates at the first power, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the cooling supply + cold storage mode is entered.

In the cooling + cold storage mode, the air conditioning system is controlled to supply cooling to the second heat exchanger by the natural cold source and the mechanical cold source, and the air conditioning system is controlled to supply cooling to the cold storage device by the natural cold source and the mechanical cold source.

24. The control method according to claim 23, characterized in that the control method comprises:

After the natural cold source and the mechanical cold source supply cooling to the second heat exchanger, and the air conditioning system is controlled to supply cooling to the cold storage device using the natural cold source and the mechanical cold source, if T0≤Ta, the air conditioning system is controlled to continue supplying cooling to the second heat exchanger using the natural cold source and the mechanical cold source, and the air conditioning system is controlled to continue supplying cooling to the cold storage device using the natural cold source and the mechanical cold source.

After the natural cold source and the mechanical cold source supply cooling to the second heat exchanger, and the air conditioning system is controlled to supply cooling to the cold storage device using the natural cold source and the mechanical cold source, if T0 > Ta, the air conditioning refrigeration system and the cold storage heat exchange system are controlled to supply cooling to the second heat exchanger using the natural cold source, the mechanical cold source and the cold storage cold source for a second preset duration.

25. The control method according to claim 23 or 24, characterized in that the control method comprises:

After the natural cold source, the mechanical cold source, and the cold storage cold source have provided cooling to the second heat exchanger for a second preset duration, if T0≤Ta, the air conditioning refrigeration system and the cold storage heat exchange system are controlled to continue providing cooling to the second heat exchanger for a second preset duration using the natural cold source, the mechanical cold source, and the cold storage cold source.

After the natural cold source, the mechanical cold source, and the cold storage cold source have provided cooling to the second heat exchanger for a second preset time, if T0 > Ta, the air conditioning refrigeration system is controlled to provide cooling to the second heat exchanger by the mechanical cold source, and the mechanical cold source operates at the second power.

26. The control method according to claim 19, characterized in that the control method comprises:

After the mechanical cold source supplies cooling to the second heat exchanger and operates at the second power, if Tb < T0 ≤ Ta, the air conditioning refrigeration system is controlled to continue supplying cooling to the second heat exchanger with the mechanical cold source and operate at the second power.

After the mechanical cold source supplies cooling to the second heat exchanger and operates at a second power, if T0 > Ta, the air conditioning refrigeration system and the cold storage heat exchange system are controlled to supply cooling to the second heat exchanger for a third preset duration, and the mechanical cold source operates at a third power.

After the mechanical cold source supplies cooling to the second heat exchanger and the mechanical cold source operates at the second power, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, the cooling supply + cold storage mode is entered.

In the cooling + cold storage mode, the air conditioning system is controlled to supply cooling to the second heat exchanger via the mechanical cold source, and the air conditioning system is also controlled to supply cooling to the cold storage device via the mechanical cold source.

27. The control method according to claim 26, characterized in that the control method comprises:

After the mechanical cold source supplies cooling to the second heat exchanger and the air conditioning system is controlled to supply cooling to the cold storage device, if T0≤Ta, the air conditioning system is controlled to continue supplying cooling to the second heat exchanger and the air conditioning system is controlled to continue supplying cooling to the cold storage device.

After the mechanical cold source supplies cooling to the second heat exchanger and the air conditioning system is controlled to supply cooling to the cold storage device, if T0 > Ta, the air conditioning system and the cold storage heat exchange system are controlled to supply cooling to the second heat exchanger for a third preset duration, and the mechanical cold source operates at a third power.

28. The control method according to claim 26 or 27, characterized in that the control method comprises:

After the cold storage source and the mechanical cold source supply cooling to the second heat exchanger for a third preset time, and the mechanical cold source operates at a third power, if T0≤Ta, the air conditioning refrigeration system and the cold storage heat exchange system are controlled to continue supplying cooling to the second heat exchanger for a third preset time, and the mechanical cold source operates at a third power.

After the cold storage source and the mechanical cold source supply cooling to the second heat exchanger for a third preset time, and the mechanical cold source operates at a third power, if T0 > Ta, the mechanical cold source supplies cooling to the second heat exchanger until T0 ≤ Ta, and the mechanical cold source operates at a fourth power.

The third power is less than the fourth power.

29. The control method according to claim 28, characterized in that the control method comprises:

After the mechanical cold source supplies cooling to the second heat exchanger until T0≤Ta, and the mechanical cold source operates at the fourth power, if T0＞Tb, the air conditioning refrigeration system is controlled to supply cooling to the second heat exchanger, and the mechanical cold source operates at the second power.

After the mechanical cold source supplies cooling to the second heat exchanger until T0≤Ta, and the mechanical cold source operates at the fourth power, if T0≤Tb and t≤t1, or T0≤Tb and t≥t2, it enters the cooling supply + cold storage mode.

30. The control method according to claim 19, characterized in that,

The air conditioning refrigeration system includes a refrigerant circuit, a refrigerant pump, a compressor, and a first switching component. The first switching component is connected to the refrigerant circuit, the refrigerant pump, and the compressor. The first switching component is configured to control the refrigerant pump and the compressor to enter and exit the refrigerant circuit.

The cold storage and heat exchange system includes a coolant circuit, a cold storage device, and a second switching component. The coolant circuit and the refrigerant circuit are connected through a first heat exchanger. The coolant circuit includes a second heat exchanger for exchanging heat with the load. The second switching component is connected to the cold storage device, the first heat exchanger, and the second heat exchanger. The second switching component is configured to control the cold storage device to enter and exit the coolant circuit.

31. The control method according to claim 30, wherein the first switching component comprises a first valve and a second valve;

32. The control method according to claim 30, wherein the second switching component comprises a first valve component and a second valve component;

The first valve assembly is connected to the outlet of the first heat exchanger, the inlet of the cold storage device, and the inlet of the second heat exchanger. The first valve assembly is configured to control whether the coolant flowing out of the first heat exchanger flows into the cold storage device.

33. A control device for an air conditioning system, characterized in that it includes a processor and a memory;

The memory stores a computer program, which, when executed by the processor, implements the steps of the control method according to any one of claims 18-32.

34. An air conditioning system, characterized in that it includes the control device of claim 33.

35. A computer-readable storage medium having a computer program stored thereon, characterized in that, when the computer program is executed by a processor, it implements the steps of the control method according to any one of claims 18-32.