Refrigerating system and refrigerating method

Abstract

The refrigerating system can be applied to the field of financial science and technology and particularly can be applied to cooling of a data center in the financial field, and comprises the steps that a cold source station provides first refrigerating water; the cold storage water tank is connected with the cold source station and stores first refrigeration water; the refrigeration unit comprises a first inlet and a first outlet, the first inlet is connected with the cold storage water tank, the first outlet is connected with the cold source station, first refrigeration water in the cold storage water tank is received through the first inlet and exchanges heat with the external environment, and the refrigeration water is converted into second refrigeration water after heat exchange and is output through the first outlet; the cold source station further receives the second refrigeration water output by the first outlet and cools the second refrigeration water into the first refrigeration water; the first check valve is arranged on a pipeline between the cold source station and the cold storage water tank and controls transmission of first refrigeration water between the cold source station and the cold storage water tank. And the second check valve is arranged on the pipeline between the outlet of the refrigeration unit and the cold source station and is used for controlling the transmission of the second refrigeration water between the refrigeration unit and the cold source station.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of financial technology, in particular to refrigeration cooling of a financial data center, and more particularly to a refrigeration system and a refrigeration method. BACKGROUND

[0002] With the continuous development of IT technology, data centers are continuously built and improved. In order to meet the higher requirements of users on service experience and computing power, the architecture of data centers gradually presents a multi-level and three-dimensional development trend. In addition to deploying super-large data centers in national computing hubs, a large number of small and medium-sized edge data centers are also being built in various places. At the same time, server chip technology continues to improve, resulting in a continuous increase in the power density of computer rooms. The traditional air-cooled direct expansion air conditioner is difficult to meet the demand of high-power load due to its limited refrigeration density, especially in the liquid cooling scene. Although the existing air-cooled direct expansion air conditioner has a simple structure, its cooling capacity is low and it is difficult to achieve uninterrupted cooling. If the continuous operation demand is to be met, a large UPS system needs to be configured, but such equipment occupies a large space and is complex to install, making it difficult to be widely deployed in small and medium-sized data centers. Another solution is to build a dedicated water-cooled cooling source station. Although it can provide continuous cooling by using redundant chiller units, cooling towers, UPS and large-scale cold storage devices, it is difficult to meet the relevant deployment conditions in ordinary office buildings due to the need for a large amount of space and high building load requirements, and the overall construction cost is high. SUMMARY

[0003] Therefore, the present disclosure provides a refrigeration system and an electronic device.

[0004] One aspect of the present disclosure provides a refrigeration system, comprising: a cooling source station configured to provide first refrigeration water; a cold storage tank connected to the cooling source station and configured to store the first refrigeration water; a refrigeration unit comprising a first inlet and a first outlet, the first inlet being connected to the cold storage tank, and the first outlet being connected to the cooling source station, the refrigeration unit being configured to receive the first refrigeration water in the cold storage tank through the first inlet and exchange heat with the external environment, the first refrigeration water being converted into second refrigeration water after heat exchange and being output through the first outlet, the cooling source station being further configured to receive the second refrigeration water output through the first outlet and cool the second refrigeration water into the first refrigeration water; a first check valve disposed on a communication pipeline between the cooling source station and the cold storage tank and configured to control the transmission of the first refrigeration water between the cooling source station and the cold storage tank; and a second check valve disposed on a communication pipeline between the outlet of the refrigeration unit and the cooling source station and configured to control the transmission of the second refrigeration water between the refrigeration unit and the cooling source station.

[0005] According to an embodiment of the present disclosure, the cold storage water tank is provided with a first inlet and a second inlet, the first inlet is used for receiving the first refrigeration water provided by the cold source station; the refrigeration system further comprises a built-in water pump, the built-in water pump is arranged on a communication pipeline between the first outlet and the second inlet, and the built-in water pump is used for driving the second refrigeration water transmitted by the first outlet to be transmitted to the second inlet.

[0006] According to an embodiment of the present disclosure, the refrigeration system further comprises a control unit connected with the first check valve, the second check valve and the built-in water pump, and used for controlling the opening and closing of the first check valve and the second check valve and the working state of the built-in water pump.

[0007] According to an embodiment of the present disclosure, the refrigeration system further comprises a power supply unit used for supplying power to at least one of the refrigeration unit, the first check valve, the second check valve and the built-in water pump.

[0008] According to an embodiment of the present disclosure, the refrigeration system is applied to a target space, wherein the cold source station is arranged outside the target space, and the refrigeration unit is arranged inside the target space.

[0009] Another aspect of the present disclosure provides a refrigeration method applied to the refrigeration system in the foregoing embodiments, and the refrigeration method comprises the following steps: monitoring the power supply condition of the refrigeration system and the refrigeration condition of the first refrigeration water provided by the cold source station in real time; in response to the power supply condition being a normal condition and the refrigeration condition being a normal condition, controlling the first check valve and the second check valve to be opened, so that the first refrigeration water exchanges heat with the environment in the refrigeration unit after passing through the first check valve and the cold storage water tank, is converted into the second refrigeration water, and then flows back to the cold source station for cooling

[0010] According to an embodiment of the present disclosure, the refrigeration method further comprises the following step: in response to the power supply condition being an abnormal condition and the refrigeration condition being a normal condition, controlling the power supply unit to supply power to the refrigeration unit.

[0011] According to an embodiment of the present disclosure, in response to the power supply condition being a normal condition and the refrigeration condition being an abnormal condition, the first check valve and the second check valve are controlled to be closed; the built-in water pump is controlled to be started, so that the first refrigeration water stored in the cold storage water tank is transmitted to the refrigeration unit, exchanges heat with the environment in the refrigeration unit, is converted into the second refrigeration water, and then is transmitted back to the cold storage water tank through the built-in water pump.

[0012] According to an embodiment of the present disclosure, in response to the power supply condition being an abnormal condition and the refrigeration condition being an abnormal condition, the first check valve and the second check valve are controlled to be closed; the power supply unit is controlled to supply power to the built-in water pump; the built-in water pump is controlled to be started, so that the first refrigeration water stored in the cold storage water tank is transmitted to the refrigeration unit, exchanges heat with the environment in the refrigeration unit, is converted into the second refrigeration water, and then is transmitted back to the cold storage water tank through the built-in water pump.

[0013] According to an embodiment of the present disclosure, in response to the power supply condition being converted from the abnormal state to the normal state and the cooling supply condition being the abnormal condition, the power supply unit is controlled to stop supplying power to the built-in water pump.

[0014] According to an embodiment of the present disclosure, in response to the power supply condition being converted from the abnormal state to the normal state and the cooling supply condition being the abnormal condition, the power supply unit is controlled to stop supplying power to the built-in water pump. BRIEF DESCRIPTION OF DRAWINGS

[0015] The above and other objects, features and advantages of the present disclosure will be more clearly understood from the following description taken in conjunction with the accompanying drawings, in which:

[0016] Figure 1 A block diagram of a refrigeration system according to an embodiment of the present disclosure is schematically illustrated;

[0017] Figure 2 Another block diagram of a refrigeration system according to an embodiment of the present disclosure is schematically illustrated;

[0018] Figure 3 Another block diagram of a refrigeration system according to an embodiment of the present disclosure is schematically illustrated;

[0019] Figure 4 A flowchart of a refrigeration method according to an embodiment of the present disclosure is schematically illustrated;

[0020] Figure 5 Another flowchart of a refrigeration method according to an embodiment of the present disclosure is schematically illustrated;

[0021] Figure 6 Another flowchart of a refrigeration method according to an embodiment of the present disclosure is schematically illustrated;

[0022] Figure 7 Another flowchart of a refrigeration method according to an embodiment of the present disclosure is schematically illustrated;

[0023] Figure 8 A block diagram of a refrigeration control apparatus according to an embodiment of the present disclosure is schematically illustrated; and

[0024] Figure 9 A block diagram of an electronic device suitable for implementing the above-described method according to an embodiment of the present disclosure is schematically illustrated. DETAILED DESCRIPTION

[0025] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood, however, that the description is merely exemplary and is intended to convey concepts of the present disclosure. In the following detailed description of embodiments of the present disclosure, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure. However, it will be apparent to one skilled in the art that one or more embodiments of the present disclosure can be practiced without these specific details. In other instances, well-known structures and functions have not been described in detail in order to avoid obscuring aspects of the present disclosure.

[0026] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. As used herein, the term "includes" and tautological expressions thereof, such as "including," "includes," "include," "contains," "containing," and so forth, mean "comprising."

[0027] All terms used herein including technical and scientific terms have the same meanings as commonly understood by one of ordinary skill in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning that is consistent with the context of the specification, and should not be interpreted in an idealized or overly formal way.

[0028] In the case of using expressions similar to "at least one of A, B, and C, etc.", it is generally to be interpreted as including any one of A, B, or C, etc. or a combination of A, B, and C, etc. (for example, "a system having at least one of A, B, and C" should include a system having A alone, a system having B alone, a system having C alone, a system having both A and B, a system having both A and C, a system having both B and C, and a system having A, B, and C together, etc.).

[0029] In the embodiments of the present disclosure, the collection, updating, analysis, processing, use, transmission, provision, disclosure, storage, etc. of the data involved (for example, including but not limited to user personal information) are in accordance with the relevant legal regulations, are used for legal purposes, and do not violate public order and good customs. In particular, necessary measures are taken to prevent illegal access to user personal information data, to maintain the security of user personal information, network security, and national security.

[0030] The embodiment of the present disclosure provides a refrigeration system, comprising: a cold source station configured to provide first refrigeration water; a cold storage tank connected to the cold source station and configured to store the first refrigeration water; a refrigeration unit comprising a first inlet and a first outlet, the first inlet being connected to the cold storage tank, and the first outlet being connected to the cold source station, the refrigeration unit being configured to receive the first refrigeration water in the cold storage tank through the first inlet and exchange heat with an external environment, the first refrigeration water being converted into second refrigeration water after heat exchange and being output through the first outlet, the cold source station being further configured to receive the second refrigeration water output through the first outlet and cool the second refrigeration water into the first refrigeration water; a first check valve arranged on a communication pipeline between the cold source station and the cold storage tank and configured to control the transmission of the first refrigeration water between the cold source station and the cold storage tank; and a second check valve arranged on a communication pipeline between the outlet of the refrigeration unit and the cold source station and configured to control the transmission of the second refrigeration water between the refrigeration unit and the cold source station.

[0031] Figure 1 A block diagram of the refrigeration system according to the embodiment of the present disclosure is schematically shown.

[0032] As shown in Figure 1 , the refrigeration system can at least include the cold source station, the cold storage tank, the refrigeration unit, the first check valve and the second check valve.

[0033] The cold source station is configured to provide first refrigeration water; the first refrigeration water can be a refrigeration medium with low temperature and refrigeration capacity after being processed by the cold source station, for example, chilled water. Specifically, the cold source station can be a central cold source system of a building, which generates low-temperature first refrigeration water through a refrigeration cycle and delivers the first refrigeration water to a chilled water circulation pipe network through a main water pump. The cold source station usually does not have the ability to continue running when the mains power is interrupted. The cold source station can include but is not limited to a centrifugal water chiller, a screw water chiller, a cooling tower and a corresponding main circulating water pump and the like.

[0034] The cold storage tank is connected to the cold source station and is configured to store the first refrigeration water; the cold storage tank can be a container with a specific volume to store the first refrigeration water, and the material thereof can have heat preservation and insulation performance to slow down the heat exchange between the internally stored refrigeration water and the external environment. Specifically, the cold storage tank is integrated in the internal room air conditioning equipment, the inlet thereof is connected to the water supply pipeline from the cold source station for receiving and storing a certain amount of the first refrigeration water during normal operation, and the outlet thereof is connected to the inlet of the refrigeration unit.

[0035] The refrigeration unit comprises a first inlet and a first outlet, the first inlet is connected with the cold storage water tank, and the first outlet is connected with the cold source station. The refrigeration unit is used for receiving the first refrigeration water in the cold storage water tank through the first inlet, and exchanges heat with the external environment. The refrigeration water is converted into second refrigeration water after heat exchange, and is output through the first outlet. The cold source station is also used for receiving the second refrigeration water output by the first outlet, and cooling the second refrigeration water into the first refrigeration water. The refrigeration unit can refer to the core functional component for realizing heat exchange between refrigerant and cooled medium (for example, air). The second refrigeration water can refer to refrigeration medium whose temperature is increased after absorbing heat from the external environment.

[0036] For example, the refrigeration unit receives the first refrigeration water from the cold storage water tank, and the first refrigeration water flows in the heat exchange coil inside the refrigeration unit. At the same time, the fan in the refrigeration unit drives the hot air in the machine room to flow through the outer surface of the heat exchange coil. The heat of the air is transferred to the first refrigeration water in the coil, so that the temperature of the air is reduced, and the refrigeration of the machine room is realized. The first refrigeration water after absorbing heat is converted into second refrigeration water with higher temperature, and flows out from the first outlet.

[0037] The first check valve is arranged on the communication pipeline between the cold source station and the cold storage water tank, and is used for controlling the transmission of the first refrigeration water between the cold source station and the cold storage water tank. The first check valve can refer to a valve that allows fluid to flow in one direction only, also known as a one-way valve or a non-return valve. The first check valve is installed on the water inlet pipeline entering the cold storage water tank. When it is opened, it is set to allow the first refrigeration water to flow from the cold source station to the cold storage water tank, and to prevent water flow from the water supply pipe network of the cold source station back to the cold storage water tank. When it is closed, it is set to not allow the first refrigeration water to flow from the cold source station to the cold storage water tank, and to prevent water flow from the water supply pipe network of the cold source station back to the cold storage water tank.

[0038] The second check valve is arranged on the communication pipeline between the outlet of the refrigeration unit and the cold source station, and is used for controlling the transmission of the second refrigeration water between the refrigeration unit and the cold source station. The structure and principle of the second check valve can be similar to those of the first check valve. The second check valve is installed on the water return pipeline after the first outlet of the refrigeration unit. When it is opened, it is set to allow the second refrigeration water to flow from the refrigeration unit to the cold source station, and to prevent water flow from the water return pipe network of the cold source station back to the refrigeration unit. When it is closed, it is set to not allow the second refrigeration water to flow from the refrigeration unit to the cold source station, and to prevent water flow from the water return pipe network of the cold source station back to the refrigeration unit.

[0039] According to the embodiments of this disclosure, by integrating the cold water storage tank and the refrigeration unit into a water circuit connected to an external cold source station, this system can lay the hardware structural foundation for uninterrupted cooling while utilizing conventional building cold sources for efficient water cooling.

[0040] Figure 2 Another block diagram of a refrigeration system according to an embodiment of the present disclosure is shown schematically.

[0041] like Figure 2 As shown, based on the aforementioned embodiment, the cold water storage tank is provided with a first inlet and a second inlet, the first inlet being used to receive the first chilled water provided by the cold source station;

[0042] The refrigeration system also includes a built-in water pump, which is installed on the connecting pipe between the first outlet and the second inlet. The built-in water pump drives the second chilled water from the first outlet to the second inlet. The built-in water pump can refer to a booster circulation device integrated inside the water-cooled air conditioning unit, independent of the main water pump of the cold source station. The second inlet can refer to a separate water supply port on the chilled water storage tank, distinct from the first inlet used to receive water from the external cold source station. Specifically, an internal circulation pipe is configured between the first outlet and the chilled water storage tank. The built-in water pump is installed on this internal circulation pipe. One end of this pipe is connected to the first outlet of the refrigeration unit, and the other end is connected to the second inlet of the chilled water storage tank. When the built-in water pump operates, it pumps the second chilled water flowing out of the refrigeration unit back to the second inlet of the chilled water storage tank via this internal circulation pipe, thereby forming a localized, closed-loop chilled water circulation loop between the chilled water storage tank and the refrigeration unit. For example, the built-in water pump can be a low-head, low-flow-rate inline centrifugal pump, with its pump body and motor encapsulated inside the casing of the water-cooled air conditioner. The second inlet can be a threaded interface opened on the side wall or top of the cold water storage tank for connecting to the internal circulation pipeline.

[0043] According to an embodiment of this disclosure, an independent internal water circulation loop is constructed by adding a second inlet to the cold water storage tank and configuring a built-in water pump connected to the outlet of the refrigeration unit. This structure allows the refrigeration unit to utilize the cold energy stored in the cold water storage tank for internal circulation refrigeration when necessary, without relying on an external water circulation network. This provides the necessary physical path and power source for the system to maintain its refrigeration capacity under abnormal operating conditions such as failure of external cold sources, thereby enhancing the system's operational independence and reliability.

[0044] On the basis of the foregoing embodiments, the refrigeration system can further comprise a control unit. The control unit is connected with the first check valve, the second check valve and the built-in water pump, and is configured to control the opening and closing of the first check valve and the second check valve, and to control the working state of the built-in water pump. The control unit can be an electronic device or a module capable of receiving input signals, executing preset logic programs and outputting control instructions. The working state can be a state of running, stopping or running at a specific parameter (such as a rotating speed) of the device.

[0045] Specifically, the control unit serves as the control core of the water-cooled air conditioner, and an output end of the control unit is connected with a driving circuit of the built-in water pump to send start-stop instructions. Optionally, the first check valve and the second check valve can be electrically controlled valves, and an output end of the control unit is also connected with actuators of the electrically controlled valves to actively control the opening or closing of the electrically controlled valves. Optionally, the first check valve and the second check valve are passive valves, and the opening and closing states of the passive valves are determined by the pressure difference of the pipelines, and the control unit indirectly changes the pressure difference of the pipelines by controlling the start and stop of the built-in water pump, thereby achieving control over the opening and closing states of the check valves. The control unit can be a microcontroller unit (MCU) or a programmable logic controller (PLC) integrated in the water-cooled air conditioner, and a firmware program for coordinating the actions of various components is written on the control unit.

[0046] According to the embodiments of the present disclosure, by adding the control unit, centralized and automatic management of key execution components (such as the built-in water pump) inside the refrigeration system is achieved. This enables the refrigeration system to have the ability to autonomously coordinate the work of various components according to preset logic, provides a control basis for intelligent switching under different working conditions, and thus improves the automation level and operation reliability of the entire refrigeration system, and reduces the need for manual intervention.

[0047] On the basis of the foregoing embodiments, the refrigeration system can further comprise a power supply unit configured to supply power to at least one of the refrigeration unit, the first check valve, the second check valve and the built-in water pump. The power supply unit can be a device capable of providing continuous and stable power to connected load devices when the main power supply system (for example, the mains) fails. Specifically, the power supply unit is integrated in the cabinet of the water-cooled air conditioner, an input end of the power supply unit is connected with the external mains, and an output end of the power supply unit is connected with power input ends of key power-consuming components inside the water-cooled air conditioner that need emergency power supply. The key power-consuming components can at least include a fan in the refrigeration unit, the built-in water pump and the control unit. When the external mains is normal, the power supply unit is in a standby or charging state; when the external mains is abnormal, the power supply unit can automatically release the power stored therein to ensure the continuous operation of the key power-consuming components.

[0048] According to the embodiment of the present disclosure, by integrating the power supply unit inside the water-cooled air conditioner, the key components responsible for circulation and heat exchange inside the air conditioner obtain independent power sources not dependent on external mains, guaranteeing the indispensable electric energy for uninterrupted refrigeration function, thereby improving the reliability and emergency autonomy of a single air conditioning device.

[0049] Figure 3 Another block diagram of a refrigeration system according to the embodiment of the present disclosure is schematically shown.

[0050] As Figure 3 shown, the refrigeration system is applied to a target space, wherein the cold source station is arranged outside the target space, and the refrigeration unit is arranged inside the target space. The target space can refer to a specific enclosed area that needs precise and continuous temperature control to guarantee the stable operation of internal equipment. Specifically, the cold source station can be a public central cold source facility of a building (for example, an office building, an office building), which is usually centrally arranged in a dedicated equipment layer, a basement or a roof of the building. The integrated water-cooled air conditioning device including the refrigeration unit, the cold storage tank, the built-in water pump and other components is directly installed inside the target space (for example, an IT machine room in the building) as an independent terminal unit, and is connected to the pre-set chilled water supply and return pipe interface of the building.

[0051] For example, in a small and medium-sized edge data center deployed in an existing office building, the target space is the server room of the data center. The cold source station is a central air conditioner chiller unit uniformly managed by the office building property. Multiple water-cooled air conditioners integrated with the refrigeration unit and having the structure described in the present disclosure are arranged in rows in the server room and placed side by side or adjacent to the server cabinet.

[0052] According to the embodiment of the present disclosure, by such an internal-external separation deployment mode, the core facility generating the cold source and the functional unit performing the terminal refrigeration are decoupled in physical space. This enables users to build an uninterrupted cooling environment meeting high-level requirements in ordinary commercial buildings without special refrigeration room construction conditions, by only deploying the refrigeration unit with high autonomy arranged in the target space, effectively avoiding the limitation of large-scale modification of the main structure and public facilities of the building.

[0053] Figure 4 A flowchart of a refrigeration method according to the embodiment of the present disclosure is schematically shown.

[0054] As Figure 4 shown, on the basis of the foregoing embodiment, the refrigeration method is applied to the refrigeration system described in any one of the foregoing embodiments, and the refrigeration method can include operations S410-S420.

[0055] At operation S410, the power supply condition of the cooling system and the cooling condition of the first chilled water provided by the cooling source station are monitored in real time. The power supply condition can refer to the availability state of the mains power supply for powering the cooling system, such as normal or abnormal (e.g. power failure, under-voltage). The cooling condition can refer to whether the first chilled water provided by the cooling source station meets a preset cooling condition, which can be represented by one or more parameters such as the flow rate and / or temperature of the water.

[0056] Specifically, data is continuously collected by built-in or external sensors. For example, the voltage value of the mains input port is monitored by a voltage sensor to determine the power supply condition; the flow rate and temperature values of the first chilled water are obtained in real time by a flow meter and a temperature sensor installed on the water inlet pipeline to determine the cooling condition.

[0057] For example, the "normal power supply condition" can be defined as the mains voltage being within the range of 220V ± 10%, and the "normal cooling condition" can be defined as the water inlet flow rate being not lower than a preset lower limit value (e.g. 10 L / min) and the water inlet temperature being not higher than a preset upper limit value (e.g. 12°C).

[0058] At operation S420, in response to the power supply condition being normal and the cooling condition being normal, the first check valve and the second check valve are controlled to be opened, so that the first chilled water flows through the first check valve, the cold storage water tank, and then exchanges heat with the environment in the cooling unit to be converted into the second chilled water, which then flows back to the cooling source station for cooling. The normal condition can refer to a state in which both the power supply and the cooling meet the preset normal operation conditions determined by the control unit at operation S410.

[0059] Specifically, in this working condition, it is determined that the ideal operating environment is achieved. The control unit will not start the built-in water pump, and the mains power supply will power the cooling unit (mainly the internal fan) and the control unit itself. At this time, the main water pump of the cooling source station provides circulating power, and the generated pipeline pressure is sufficient to push open the first check valve and the second check valve, thereby establishing an external large circulating water pipeline that runs through the cooling source station and the cooling system. The first chilled water flows through the first check valve, the cold storage water tank, and the cooling unit in sequence, completes the cooling of the target space, and then the formed second chilled water returns to the cooling source station for recooling through the second check valve.

[0060] For example, when it is monitored that the mains power is normal and the chilled water supply is normal, the control unit maintains the built-in water pump in a stopped state. The chilled water from the cooling source station flows through the check valve under the drive of the main water pump, fills the cold storage water tank, and then enters the heat exchanger to cool the computer room air, and the warmed water flows back to the cooling source station through the check valve. This process not only achieves cooling of the computer room, but also ensures that the cold storage water tank is always filled with low-temperature chilled water, thereby completing the cold storage process.

[0061] According to the embodiment of the present disclosure, the external cold source and the commercial power are used to perform the refrigeration operation efficiently and with low energy consumption, and the flowing refrigeration water is used to automatically and without additional energy consumption to fill the internal cold storage water tank with cold energy, thereby providing necessary cold energy storage for seamless switching in abnormal working conditions.

[0062] Figure 5 Another flowchart of the refrigeration method according to the embodiment of the present disclosure is schematically shown.

[0063] As shown in the foregoing embodiment, the refrigeration method can further include operation S510. Figure 5

[0064] In operation S510, in response to the power supply condition being an abnormal condition and the refrigeration condition being a normal condition, the power supply unit is controlled to supply power to the refrigeration unit. The abnormal condition can mean that the parameter value monitored by the control unit in operation S410 is out of the preset normal range. Specifically, when the control unit judges that the commercial power input has been interrupted (i.e., the power supply condition is abnormal), but at the same time judges that the flow and temperature of the first refrigeration water from the cold source station are still in the normal range (i.e., the refrigeration condition is normal), the control unit will immediately perform emergency power switching. It will issue an instruction to the power supply unit to immediately take power from the internal energy storage element (e.g., a battery) of the power supply unit, and supply power to the key power-consuming components (at least including the fan) of the refrigeration unit and the control unit itself through the inverter circuit. In this process, the control unit will maintain the built-in water pump in a stopped state, because the external water circulation power still exists.

[0065] For example, when the power supply line of the floor where the machine room is located fails, causing the commercial power to be interrupted, the control unit detects that the input voltage disappears. However, because the central cold source station of the building is powered by an independent power supply line and is operating normally, the flow meter and temperature sensor readings on the water inlet pipeline are still normal. At this time, the control unit immediately triggers the built-in power supply system to take over, and the power supply unit supplies power to the fan and the fan in the heat exchanger, ensuring that the air circulation and heat exchange process in the machine room are not interrupted. Because the external water flow is normal, the water circuit still maintains the external circulation path, and the built-in water pump does not need to be started.

[0066] According to the embodiment of the present disclosure, in this specific failure mode, only the power emergency backup can be accurately started, and the external continuously supplied cold source is continued to be used, thereby avoiding the consumption of the internal limited cold storage resources. This not only ensures the refrigeration continuity under the commercial power failure, but also maximizes the cold storage capacity of the system.

[0067] Figure 6 Another flowchart of the refrigeration method according to the embodiment of the present disclosure is schematically shown. ​

[0068] On the basis of the foregoing embodiments, the refrigeration method can further include operation S610~operation S620.

[0069] In operation S610, in response to the power supply condition being a normal condition and the refrigeration condition being an abnormal condition, the first check valve and the second check valve are controlled to be closed. When the control unit determines that the refrigeration condition is abnormal, switching to an emergency refrigeration mode is performed. To establish an independent internal circulation, the control unit needs to ensure that the refrigeration system is isolated from the external pipe network, and this isolation is achieved by closing the first check valve and the second check valve. The control unit can ensure that the valves are closed in an active or passive manner to prevent internal refrigeration water from flowing to the external pipe network.

[0070] For example, in one embodiment, the check valve is a passive one-way valve. When the main water pump of the cold source station 1 stops running and causes the external pipe network to lose circulating pressure, the first check valve 2 and the second check valve 5 are automatically closed due to their own one-way flow characteristics. In another embodiment, the check valve can be an electrically controlled valve, and the control unit actively sends a closing instruction to the valve actuator to achieve forced closing after detecting refrigeration abnormalities.

[0071] In operation S620, the built-in water pump is controlled to be started to cause the stored cold storage water in the cold storage water tank to be transmitted to the refrigeration unit, and after the cold storage water is converted into second refrigeration water by exchanging heat with the environment in the refrigeration unit, the second refrigeration water is transmitted back to the cold storage water tank via the built-in water pump.

[0072] After isolation from the external pipe network is confirmed, the control unit immediately issues a start instruction to the built-in water pump. Since the power supply condition is normal at this time, the built-in water pump is directly powered and driven by the mains. After being started, the built-in water pump drives the pre-stored low-temperature refrigeration water in the cold storage water tank to flow through the refrigeration unit (for example, a fan and a heat exchanger), absorbs heat in the target space to maintain refrigeration, and the second refrigeration water after being heated is pumped back to the cold storage water tank. This process establishes a local closed circulation waterway composed of the cold storage water tank, the refrigeration unit, and the built-in water pump, thereby starting to consume the internal reserved cold energy, and this process is also referred to as a cold release process.

[0073] According to the embodiments of the present disclosure, without relying on an external cold source, the built-in water pump is driven by the mains to activate a completely autonomous internal refrigeration circulation, which can effectively utilize the pre-stored cold energy to provide a valuable and uninterrupted “bridge” refrigeration time for the machine room until the external cold source is restored, thereby ensuring that the operating environment of the critical IT equipment is still stable when the building central air conditioning and other facilities fail.

[0074] Figure 7 Another flowchart of a refrigeration method according to an embodiment of the present disclosure is schematically shown.

[0075] On the basis of the foregoing embodiment, the refrigeration method can further comprise operations S710-S730.

[0076] At operation S710, in response to the power supply condition being an abnormal condition and the cooling supply condition being an abnormal condition, the first check valve and the second check valve are controlled to be closed. When the control unit determines that the mains input and the external cooling source supply have both been interrupted, the emergency mode is entered. To start the completely independent internal operation mode, it is necessary to ensure that the system is completely isolated from the failed external pipe network. This isolation is achieved by closing the first check valve and the second check valve to prevent any potential loss of the internal cold storage water resource and to prevent heat loss of the internally stored refrigeration water. For example, when regional power failure occurs, causing the machine room mains to be interrupted and the building central cooling source station to stop working, the power supply abnormality and the cooling abnormality are simultaneously detected. At this time, the passive check valves are automatically closed due to the disappearance of the external pipe network pressure, or if the check valves are electrically controlled, the control unit that has switched to the backup power source actively issues a closing instruction to ensure isolation.

[0077] At operation S720, the power supply unit is controlled to supply power to the built-in water pump. After determining that the double failure state is entered, the power supply unit provides the internal water pump, which is a key component for starting the internal water circulation, with the electrical energy required for operation. At the same time, the power supply unit also provides continuous power supply for other components necessary for heat exchange maintenance (such as the fan in the refrigeration unit) and the control unit itself.

[0078] At operation S730, the built-in water pump is controlled to be started to enable the first refrigeration water stored in the cold storage water tank to be transferred to the refrigeration unit, and after the first refrigeration water is converted into second refrigeration water by exchanging heat with the environment in the refrigeration unit, the second refrigeration water is transferred back to the cold storage water tank via the built-in water pump. After the built-in water pump obtains stable power from the power supply unit, the control unit immediately issues a start instruction to the built-in water pump. The start of the built-in water pump completely relies on internal storage resources (i.e., stored electrical energy and stored cold energy) to release cold. The water circulation path is completely the same as the internal circulation described in the foregoing embodiment, that is, a closed loop is formed between the cold storage water tank, the refrigeration unit, and the built-in water pump to maintain uninterrupted refrigeration of the target space.

[0079] On the basis of the foregoing embodiment, the refrigeration method can further comprise an operation stop operation.

[0080] The stop operation, in response to the power supply condition being converted from an abnormal state to a normal state, and the cooling condition being an abnormal condition, controls the power supply unit to stop supplying power to the built-in water pump. The control of the power supply unit to stop supplying power to the built-in water pump can mean that the control unit instructs the power supply unit to stop the energy output of the internal energy storage element after detecting the recovery of the main power supply, and switches the power supply source of the load to the restored external main power supply, rather than stopping the operation of the built-in water pump. When the control unit determines that the power supply condition has returned to normal, but the cooling condition is still abnormal, the system will switch from the mode of completely relying on internal resources to the mode of only relying on internal cooling capacity. The control unit will instruct the power supply unit to stop its inverter output and switch to a mains through or bypass mode. This switching process is seamless, ensuring that the operation of the built-in water pump is not interrupted, and its power supply source is smoothly switched from the energy storage element of the power supply unit to the external mains.

[0081] For example, after the mains is restored, the control unit detects that the input voltage is normal, but the flow in the water inlet pipeline is still zero. The control unit immediately instructs the power supply unit to switch from the battery power supply mode to the mains bypass mode. Therefore, the power supply unit stops consuming battery power and instead charges the battery. At the same time, the built-in water pump continues to be driven by the restored mains to operate, maintaining the same internal cooling cycle as in the previous embodiment to continuously cool the machine room.

[0082] On the basis of the foregoing embodiment, the refrigeration method can further include a first switching operation.

[0083] The first switching operation, in response to the power supply condition being converted from an abnormal state to a normal state, and the cooling condition being converted from an abnormal state to a normal state, controls the first check valve and the second check valve to open, and controls the built-in water pump to close. When the control unit determines that both the power supply condition and the cooling condition have returned to normal, it will exit the emergency mode. The built-in water pump is instructed to stop running to terminate the internal circulation. The recovery of the operation of the main water pump of the external cooling source station and the reconstruction of the circulation in the external main pipeline control the first and second check valves to open, thereby reestablishing the external large circulation waterway in communication with the external cooling source station.

[0084] For example, when the control unit monitors that the mains voltage has returned to normal, and the flow and temperature sensor readings on the water inlet pipeline have also returned to the normal range, the control unit immediately sends a shutdown instruction to the built-in water pump. At the same time, the main water pump of the restored cooling source station establishes sufficient water pressure in the external pipeline, which drives the first check valve and the second check valve to open. At this time, the water circulation path returns to the standard refrigeration and cold storage mode described in Embodiment Six: the chilled water is driven by the cooling source station, flows through the first check valve, the cold storage water tank, the refrigeration unit, the second check valve in turn, and finally returns to the cooling source station.

[0085] Figure 8A block diagram of a refrigeration control device is shown schematically.

[0086] As shown in Figure 8 The refrigeration control device 1000 can include a monitoring module 1010 and a control module 1020.

[0087] The monitoring module 1010 is configured to monitor the power supply condition of the refrigeration system and the cooling condition of the refrigeration water provided by the cooling source station in real time. In some embodiments, the monitoring module 1010 can be configured to perform operation S410 in the refrigeration system described above, which will not be repeated here.

[0088] The control module 1020 is configured to control the first check valve and the second check valve to open in response to the power supply condition being a normal condition and the cooling condition being a normal condition, so that the first refrigeration water flows through the first check valve and the cold storage tank, exchanges heat with the environment in the refrigeration unit to be converted into the second refrigeration water, and then flows back to the cooling source station to reduce the temperature. In some embodiments, the control module 1020 can be configured to perform operation S420 in the refrigeration system described above, which will not be repeated here.

[0089] Any one or more of the modules, sub-modules, units, sub-units according to embodiments of the present disclosure, or at least part of any one or more of the modules, sub-modules, units, sub-units can be implemented in one module. Any one or more of the modules, sub-modules, units, sub-units according to embodiments of the present disclosure can be split into multiple modules for implementation. Any one or more of the modules, sub-modules, units, sub-units according to embodiments of the present disclosure can be at least partially implemented as a hardware circuit, such as a field programmable gate array (FPGA), a programmable logic array (PLA), a system on chip, a system on substrate, a system on package, an application specific integrated circuit (ASIC), or any other reasonable way of hardware or firmware that can be integrated or packaged with a circuit, or in any one of software, hardware and firmware or in an appropriate combination of any of them. Alternatively, one or more of the modules, sub-modules, units, sub-units according to embodiments of the present disclosure can be at least partially implemented as computer program modules that can perform corresponding functions when executed.

[0090] For example, any plurality of monitoring modules 1010 and control modules 1020 can be combined into one module / unit / subunit, or any one of these modules / units / subunits can be split into multiple modules / units / subunits. Alternatively, at least part of the functionality of one or more of these modules / units / subunits can be combined with at least part of the functionality of other modules / units / subunits and implemented in one module / unit / subunit. According to embodiments of this disclosure, at least one of monitoring modules 1010 and control modules 1020 can be at least partially implemented as hardware circuitry, such as a field-programmable gate array (FPGA), a programmable logic array (PLA), a system-on-a-chip, a system-on-a-substrate, a system-on-package, an application-specific integrated circuit (ASIC), or any other reasonable means of integrating or packaging circuitry, or implemented in software, hardware, or firmware, or in any suitable combination of any of these three implementation methods. Alternatively, at least one of monitoring modules 1010 and control modules 1020 can be at least partially implemented as a computer program module, which can perform corresponding functions when the computer program module is run.

[0091] It should be noted that the data processing system part in the embodiments of this disclosure corresponds to the data processing method part in the embodiments of this disclosure. The specific description of the data processing system part is referred to in the data processing method part, and will not be repeated here.

[0092] Figure 9 A block diagram of an electronic device suitable for implementing the methods described above, according to embodiments of the present disclosure, is illustrated schematically. Figure 9 The electronic device shown is merely an example and should not be construed as limiting the functionality and scope of the embodiments disclosed herein.

[0093] like Figure 9 As shown, an electronic device 1100 according to an embodiment of the present disclosure includes a processor 1101, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 1102 or a program loaded from a storage portion 1108 into a random access memory (RAM) 1103. The processor 1101 may include, for example, a general-purpose microprocessor (e.g., a CPU), an instruction set processor and / or an associated chipset and / or a special-purpose microprocessor (e.g., an application-specific integrated circuit (ASIC)), etc. The processor 1101 may also include onboard memory for caching purposes. The processor 1101 may include a single processing unit or multiple processing units for performing different actions of the method flow according to an embodiment of the present disclosure.

[0094] In the RAM 1103, various programs and data required for the operation of the electronic device 1100 are stored. The processor 1101, the ROM 1102, and the RAM 1103 are connected to each other via the bus 1104. The processor 1101 performs various operations of the method flow according to the embodiments of the present disclosure by executing the programs in the ROM 1102 and / or the RAM 1103. It is noted that the programs can also be stored in one or more memories other than the ROM 1102 and the RAM 1103. The processor 1101 can also perform various operations of the method flow according to the embodiments of the present disclosure by executing the programs stored in the one or more memories.

[0095] According to an embodiment of the present disclosure, the electronic device 1100 can further include an input / output (I / O) interface 1105, which is also connected to the bus 1104. The electronic device 1100 can further include one or more of the following components connected to the input / output (I / O) interface 1105: an input part 1106 including a keyboard, a mouse, etc.; an output part 1107 including a display such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage part 1108 including a hard disk, etc.; and a communication part 1109 including a network interface card such as a LAN card, a modem, etc. The communication part 1109 performs communication processing via a network such as the Internet. A drive 1110 is also connected to the input / output (I / O) interface 1105 as necessary. A removable medium 1111 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc. is attached to the drive 1110 as necessary, so that a computer program read out therefrom is installed in the storage part 1108 as necessary.

[0096] According to an embodiment of the present disclosure, the method flow according to the embodiments of the present disclosure can be implemented as a computer software program. For example, the embodiments of the present disclosure include a computer program product including a computer program carried on a computer-readable storage medium, the computer program containing program codes for executing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network by the communication part 1109, and / or installed from the removable medium 1111. When the computer program is executed by the processor 1101, the above-described functions defined in the system of the embodiments of the present disclosure are performed. According to an embodiment of the present disclosure, the system, the device, the apparatus, the module, the unit, etc. described above can be implemented by computer program modules.

[0097] The present disclosure also provides a computer readable storage medium, which can be included in the device / apparatus / system described in the above embodiments, or can exist separately without being assembled into the device / apparatus / system. The above computer readable storage medium carries one or more programs, which, when executed, implement the method according to the embodiments of the present disclosure.

[0098] According to embodiments of the present disclosure, the computer readable storage medium can be a non-volatile computer readable storage medium. For example, it can include, but is not limited to, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present disclosure, the computer readable storage medium can be any tangible medium that contains or stores a program, which can be used by or in connection with an instruction execution system, apparatus, or device.

[0099] For example, according to embodiments of the present disclosure, the computer readable storage medium can include one or more memories of the ROM 1102 and / or the RAM 1103 described above and / or one or more memories other than the ROM 1102 and the RAM 1103.

[0100] Embodiments of the present disclosure also include a computer program product, which includes a computer program containing a program code for executing the method provided by the embodiments of the present disclosure, and when the computer program product is run on an electronic device, the program code is used to make the electronic device implement the refrigeration method provided by the embodiments of the present disclosure.

[0101] When the computer program is executed by the processor 1101, the above functions defined in the system / apparatus of the embodiments of the present disclosure are performed. According to embodiments of the present disclosure, the above-described systems, apparatuses, modules, units, etc. can be implemented by computer program modules.

[0102] In one embodiment, the computer program can be tangibly embodied in a non-transitory computer readable medium, such as a tangible memory device, a magnetic storage device, or the like. In another embodiment, the computer program can be tangibly embodied in a signal, such as a download signal, and be distributed over the Internet or other network. In either embodiment, the computer program can be downloaded and installed by the communication portion 1109 and / or installed from the removable media 1111. The computer program embodied in the computer readable medium or the computer program embodied in the signal can include program code, which can be executed by the processor 1101. The program code can include one or more of an operating system, a database management system, and / or one or more applications, which can be designed for implementing the embodiments of the present disclosure. The program code can be written in any appropriate programming language, including but not limited to C, C++, Java, python, "C", or similar programming languages. The program code can be executed in whole or in part on the user computing device, on a remote computing device, or on a combination of the user computing device and the remote computing device. In the case of a remote computing device, the remote computing device can be connected to the user computing device by any kind of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computing device (e.g., by connecting to an Internet service provider via the Internet).

[0103] The computer program can be tangibly embodied in a non-transitory computer readable medium, such as a tangible memory device, a magnetic storage device, or the like. In another embodiment, the computer program can be tangibly embodied in a signal, such as a download signal, and be distributed over the Internet or other network. In either embodiment, the computer program can be downloaded and installed by the communication portion 1109 and / or installed from the removable media 1111. The computer program embodied in the computer readable medium or the computer program embodied in the signal can include program code, which can be executed by the processor 1101. The program code can include one or more of an operating system, a database management system, and / or one or more applications, which can be designed for implementing the embodiments of the present disclosure. The program code can be written in any appropriate programming language, including but not limited to C, C++, Java, python, "C", or similar programming languages. The program code can be executed in whole or in part on the user computing device, on a remote computing device, or on a combination of the user computing device and the remote computing device. In the case of a remote computing device, the remote computing device can be connected to the user computing device by any kind of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computing device (e.g., by connecting to an Internet service provider via the Internet).

[0104] The above describes embodiments of the present disclosure. However, these embodiments are merely for illustrative purposes, and are not intended to limit the scope of the present disclosure. Although each embodiment is described above separately, this does not mean that the measures in each embodiment cannot be used advantageously in combination. Those skilled in the art can make various substitutions and modifications without departing from the scope of the present disclosure, and these substitutions and modifications should all fall within the scope of the present disclosure.

Claims

1. A refrigeration system characterized by, The application relates to a refrigeration system and a refrigeration method. The application relates to a refrigeration system and a refrigeration method. The application relates to a refrigeration system and a refrigeration method. The application relates to a refrigeration system and a refrigeration method. The application relates to a refrigeration system and a refrigeration method. The application relates to a refrigeration system and a refrigeration method.

2. The refrigeration system of claim 1, wherein, The application relates to a refrigeration system and a refrigeration method. The application relates to a refrigeration system and a refrigeration method.

3. The refrigeration system of claim 2, wherein, The application relates to a refrigeration system and a refrigeration method. The application relates to a refrigeration system and a refrigeration method.

4. The refrigeration system of claim 2 wherein, The application relates to a refrigeration system and a refrigeration method. The application relates to a refrigeration system and a refrigeration method.

5. The refrigeration system of claim 1, wherein, The application relates to a refrigeration system and a refrigeration method.

6. A method of refrigeration, characterized by The application relates to a refrigeration system and a refrigeration method. The application relates to a refrigeration system and a refrigeration method. The application relates to a refrigeration system and a refrigeration method.

7. The refrigeration method according to claim 6, characterized in that, The application relates to a refrigeration system and a refrigeration method. The application relates to a refrigeration system and a refrigeration method.

8. The refrigeration method of claim 6, wherein, The application relates to a refrigeration system and a refrigeration method. The application relates to a refrigeration system and a refrigeration method. The application relates to a refrigeration system and a refrigeration method. The application relates to a refrigeration system and a refrigeration method. The application relates to a refrigeration system and a refrigeration method. The application relates to a refrigeration system and a refrigeration method. The application relates to a refrigeration system and a refrigeration method. The application relates to a refrigeration system and a refrigeration method. The application relates to a refrigeration system and a refrigeration method. The application relates to a refrigeration system and a refrigeration method. The application relates to a refrigeration system and a refrigeration method. The application relates to a refrigeration system and a refrigeration method. 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The application relates to controlling the built-in water pump to start, so that the first refrigeration water stored in the cold storage water tank is transmitted to the refrigeration unit, and after being converted into second refrigeration water by exchanging heat with the environment in the refrigeration unit, is transmitted back to the cold storage water tank via the built-in water pump.

9. The refrigeration method of claim 6, wherein, Further comprising: in response to the power supply condition being an abnormal condition and the cooling condition being an abnormal condition, controlling the first check valve and the second check valve to close; controlling the power supply unit to supply power to the built-in water pump; controlling the built-in water pump to start, so that the first refrigeration water stored in the cold storage water tank is transmitted to the refrigeration unit, and after being converted into second refrigeration water by exchanging heat with the environment in the refrigeration unit, is transmitted back to the cold storage water tank via the built-in water pump.

10. The refrigeration method of claim 9, wherein, Further comprising: in response to the power supply condition being converted from an abnormal state to a normal state and the cooling condition being an abnormal condition, controlling the power supply unit to stop supplying power to the built-in water pump.

11. The refrigeration method according to claim 9 or 10, characterized in that, Further comprising: in response to the power supply condition being converted from an abnormal state to a normal state and the cooling condition being converted from an abnormal state to a normal state, controlling the first check valve and the second check valve to open, and controlling the built-in water pump to close.

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