Water chilling unit, refrigerating system and heat exchange method

Abstract

The invention provides a water chilling unit, a refrigerating system and a heat exchange method, and the water chilling unit comprises a water chilling assembly which is provided with a refrigerant water outlet used for outputting cooled refrigerant water; the heat exchanger is provided with a first heat exchange channel and a second heat exchange channel which are relatively independent, the inlet end of the first heat exchange channel is used for being communicated with the refrigerant water outlet, the outlet end of the first heat exchange channel is communicated with the cold water assembly, and the inlet end of the second heat exchange channel is used for introducing a heat exchange medium; and the outlet end of the second heat exchange channel is used for communicating with a first refrigerant pipeline in a first to-be-cooled environment, so that the problem that refrigerant water provided by a water chilling unit of a ship in the prior art is not suitable for cooling the high-temperature environment where equipment of the ship is located is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a chiller, a refrigeration system and a heat exchange method. Background Art

[0002] Air conditioning systems are essential to maintaining the comfort and safety of the internal environment of ships at sea. Marine air conditioning systems, especially for large ships, widely use chillers to achieve effective temperature regulation. The refrigeration principle of the chiller relies on the vapor compression cycle, that is, the heat is absorbed by the vaporization of the liquid refrigerant in the evaporator, and then the heat is released in the form of steam in the condenser to a hotter environment to complete the refrigeration process. This process enables the chiller to stably provide constant temperature, constant flow, and constant pressure refrigerant water at about 5°C, which is directly used in the air conditioning system in the cabin, creating a cool and suitable living and working environment for crew members and passengers.

[0003] However, with the development of ship technology and higher requirements for safety, the temperature sensitivity of various operating equipment on board is also increasing. These equipment include electronic control systems, power units, communication equipment, etc., which may cause overheating, functional degradation or even failure when operating in a high temperature environment, posing a threat to the safe navigation and long-term operation of the ship. In addition, since the existing chillers suitable for ships are mainly aimed at human living environments, such chillers can only provide refrigerant water at around 5°C, which is lower than the safe operating temperature of most equipment, and thus cannot cool down the high temperature environment in which the ship's equipment is located.

[0004] If this low-temperature refrigerant water is used to cool down the high-temperature environment where the ship's equipment is located, due to the significant temperature difference between the high-temperature environment and the 5°C refrigerant water, condensation will easily form on the equipment surface and internal pipes. The condensation phenomenon is particularly obvious in a high-humidity environment. It will not only reduce the cooling efficiency of the equipment, but also cause a short circuit in the internal circuit of the equipment, especially for those electronic devices that are particularly sensitive to humidity. Since the ship environment is often more humid than the land environment and the operating environment temperature of the equipment is higher, if this chiller is used to provide refrigerant water, this will further aggravate the condensation phenomenon and pose a potential risk to the safe operation of the ship. Summary of the invention

[0005] The main purpose of the present invention is to provide a chiller, a refrigeration system and a heat exchange method to solve the problem that the refrigerant water provided by the chiller of the ship in the prior art is not suitable for cooling the high temperature environment in which the equipment of the ship is located.

[0006] In order to achieve the above object, according to one aspect of the present invention, a chiller is provided, the chiller comprising:

[0007] A cold water component, having a cold water outlet for outputting the cold water after cooling;

[0008] The heat exchanger has a relatively independent first heat exchange channel and a second heat exchange channel. The inlet end of the first heat exchange channel is used to communicate with the refrigerant water outlet, and the outlet end of the first heat exchange channel is connected to the cold water component. The inlet end of the second heat exchange channel is used to introduce heat exchange medium, and the outlet end of the second heat exchange channel is used to communicate with the first refrigerant pipeline in the first environment to be cooled.

[0009] Furthermore, the chiller also includes: a diverter component, which is arranged on the first pipe between the refrigerant water outlet and the first heat exchange channel, and the diverter component has a first inlet, a first outlet and a second outlet, the first inlet is used to communicate with the refrigerant water outlet, the first outlet is used to communicate with the first refrigerant pipe, and the second outlet is used to communicate with the second refrigerant pipe in the second environment to be cooled.

[0010] Furthermore, the chiller also includes: a first temperature detection component, which is arranged at the outlet of the second heat exchange channel to detect the first real-time temperature of the heat exchange medium after heat exchange, so as to control the opening of the first inlet according to the first real-time temperature.

[0011] Furthermore, the cold water assembly further includes a compressor and a condenser, the outlet end of the compressor is connected to the inlet end of the condenser, and the cold water assembly further includes:

[0012] A second temperature detection component is provided at the inlet end of the first heat exchange channel to detect the real-time inlet water temperature of the refrigerant water entering the first heat exchange channel;

[0013] The third temperature detection component is arranged on the second pipeline between the outlet end of the first heat exchange channel and the first refrigerant pipeline to detect the real-time outlet water temperature of the refrigerant water after heat exchange, so as to control the operating frequency of the compressor according to the temperature difference between the real-time inlet water temperature and the real-time outlet water temperature.

[0014] Furthermore, the cold water component also includes an evaporator, a throttling component is provided on the pipeline between the outlet end of the condenser and the inlet end of the evaporator, the outlet end of the evaporator is a refrigerant water outlet, and the cold water component also includes:

[0015] A second temperature detection component is provided at the inlet end of the first heat exchange channel to detect the real-time inlet water temperature of the refrigerant water entering the first heat exchange channel;

[0016] The third temperature detection component is arranged on the second pipeline between the outlet end of the first heat exchange channel and the first refrigerant pipeline to detect the real-time outlet water temperature of the refrigerant water after heat exchange, so as to control the opening of the throttling component according to the temperature difference between the real-time inlet water temperature and the real-time outlet water temperature.

[0017] Furthermore, the chiller also includes: a heat exchange medium supply system, the heat exchange medium supply system has a heat exchange medium outlet, the heat exchange medium outlet is connected to the inlet end of the second heat exchange channel, and is used to introduce the heat exchange medium into the second heat exchange channel.

[0018] According to another aspect of the present invention, a refrigeration system is provided. The refrigeration system includes the above-mentioned chiller, and the refrigeration system also includes a first refrigerant pipe and a second refrigerant pipe connected to the refrigerant water outlet of the chiller.

[0019] According to another aspect of the present invention, a heat exchange method is provided, which is applied to the above-mentioned chiller, and the heat exchange method comprises: in response to user operation, controlling the heat exchange medium in the heat exchange medium supply system to enter the second heat exchange channel from the outlet end of the heat exchange medium supply system;

[0020] The refrigerant water in the cold water component is controlled to be transported to the first heat exchange channel to exchange heat with the heat exchange medium in the second heat exchange channel.

[0021] Furthermore, the heat exchange method further comprises: obtaining a first real-time temperature at an outlet of the second heat exchange channel;

[0022] When it is determined that the first real-time temperature is greater than a preset temperature range, controlling to increase the opening of the first inlet in the diversion component to increase the flow of the refrigerant water entering the first heat exchange channel;

[0023] When it is determined that the first real-time temperature is less than a preset temperature range, the opening of the first inlet in the diversion component is controlled to be reduced to reduce the flow rate of the refrigerant water entering the first heat exchange channel;

[0024] When it is determined that the first real-time temperature is within the preset temperature range, the refrigerant water is controlled to continue to be transported into the first heat exchange channel at the current flow rate.

[0025] Furthermore, the heat exchange method further includes: obtaining the real-time inlet water temperature of the refrigerant water at the inlet end of the first heat exchange channel;

[0026] Obtaining the real-time outlet water temperature of the refrigerant water after heat exchange at the outlet end of the first heat exchange channel;

[0027] Obtain the temperature difference between the real-time water inlet temperature and the real-time water outlet temperature;

[0028] When it is judged that the temperature difference is greater than the set temperature range, the operating frequency of the compressor is increased;

[0029] When it is judged that the temperature difference is less than the set temperature range, the operating frequency of the compressor is controlled to be reduced;

[0030] When it is determined that the temperature difference is within the set temperature range, the compressor is controlled to operate at the frequency at the current moment.

[0031] Furthermore, the heat exchange method further includes: obtaining the real-time inlet water temperature of the refrigerant water at the inlet end of the first heat exchange channel;

[0032] Obtaining the real-time outlet water temperature of the refrigerant water after heat exchange at the outlet end of the first heat exchange channel;

[0033] Obtain the temperature difference between the real-time water inlet temperature and the real-time water outlet temperature;

[0034] When it is judged that the temperature difference is greater than the set temperature range, the opening of the throttling component is increased by control;

[0035] When it is judged that the temperature difference is less than the set temperature range, the opening of the throttling component is controlled to be reduced;

[0036] When it is determined that the temperature difference is equal to the set temperature range, the throttling component is controlled to operate at the opening at the current moment.

[0037] Furthermore, the step of obtaining a preset temperature range includes:

[0038] Acquire the temperature of the first environment to be cooled;

[0039] Obtaining the humidity of the first environment to be cooled;

[0040] According to humidity and temperature, the dew point temperature is calculated;

[0041] Based on the dew point temperature, increase or decrease the floating temperature value to obtain the preset temperature range;

[0042] Among them, the floating temperature value is 2℃.

[0043] By applying the technical solution of the present invention, the chiller in the present application can use low-temperature refrigerant water to exchange heat with high-temperature heat exchange medium by adding a heat exchanger to reduce the temperature of the heat exchange medium, and transport the heat exchange medium after the temperature is reduced to the first refrigerant pipeline in the first cooling environment to cool the operating equipment in the first cooling environment. The chiller in the prior art only uses refrigerant water of about 5°C to cool the operating equipment. Since the temperature of the refrigerant water is too low (about 5°C), it is easy to cause condensation on the surface of the operating equipment, thereby causing faults such as short circuit of the operating equipment. The present application sets a special heat exchanger to exchange heat with part of the refrigerant water of 5°C and the heat exchange medium of about 30°C, reduce the temperature of the heat exchange medium to about 24°C, and then transport the heat exchange medium of about 24°C to the first refrigerant pipeline in the first cooling environment to cool the operating equipment in the first cooling environment. Because the temperature of about 24°C is not much different from the temperature of the environment where the operating equipment is located, it can effectively avoid the generation of condensation and ensure the safe and stable operation of the operating equipment. Since the condensation on the surface of the running equipment is avoided, the chiller of the present application can effectively reduce the short-circuit failure of the equipment caused by condensed water, thereby increasing the service life of the equipment, reducing maintenance costs, and indirectly improving the operating efficiency and economy of the ship. By optimizing the use of refrigerant water, the chiller of the present application can use the refrigerant more efficiently and reduce unnecessary waste of cooling. For example, when the temperature of the refrigerant water rises after passing through the heat exchanger and the heat exchange medium, this part of the heat can be reused instead of being directly discharged into the environment, which not only improves the overall efficiency of the system, but also helps to reduce energy consumption and environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0045] Figure 1 A schematic diagram of the structure of a water chiller according to an embodiment of the present application is shown;

[0046] The above drawings include the following reference numerals:

[0047] 1. Heat exchanger; 2. Diverter component; 21. First inlet; 22. First outlet; 23. Second outlet; 4. Condenser; 5. Evaporator; 6. Throttling component; 7. Compressor; 8. Heat exchange medium supply system. DETAILED DESCRIPTION

[0048] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0049] Air conditioning systems are essential to maintaining the comfort and safety of the internal environment of ships at sea. Marine air conditioning systems, especially for large ships, widely use chillers to achieve effective temperature regulation. The refrigeration principle of the chiller relies on the vapor compression cycle, that is, the heat is absorbed by the vaporization of the liquid refrigerant in the evaporator, and then the heat is released in the form of steam in the condenser to a hotter environment to complete the refrigeration process. This process enables the chiller to stably provide constant temperature, constant flow, and constant pressure refrigerant water at about 5°C, which is directly used in the air conditioning system in the cabin, creating a cool and suitable living and working environment for crew members and passengers.

[0050] However, with the development of ship technology and higher requirements for safety, the temperature sensitivity of various operating equipment on board is also increasing. These equipment include electronic control systems, power units, communication equipment, etc., which may cause overheating, functional degradation or even failure when operating in a high temperature environment, posing a threat to the safe navigation and long-term operation of the ship. In addition, since the existing chillers suitable for ships are mainly aimed at human living environments, such chillers can only provide refrigerant water at around 5°C, which is lower than the safe operating temperature of most equipment, and thus cannot cool down the high temperature environment in which the ship's equipment is located.

[0051] If this low-temperature refrigerant water is used to cool down the high-temperature environment where the ship's equipment is located, due to the significant temperature difference between the high-temperature environment and the 5°C refrigerant water, condensation will easily form on the equipment surface and internal pipes. The condensation phenomenon is particularly obvious in a high-humidity environment. It will not only reduce the cooling efficiency of the equipment, but also cause a short circuit in the internal circuit of the equipment, especially for those electronic devices that are particularly sensitive to humidity. Since the ship environment is often more humid than the land environment and the operating environment temperature of the equipment is higher, if this chiller is used to provide refrigerant water, this will further aggravate the condensation phenomenon and pose a potential risk to the safe operation of the ship.

[0052] To this end, the present application provides a chiller, a refrigeration system and a heat exchange method to address the above problems.

[0053] First, the present application provides a chiller, the chiller comprising:

[0054] A cold water component, having a cold water outlet for outputting the cold water after cooling;

[0055] Heat exchanger 1, heat exchanger 1 has relatively independent first heat exchange channel and second heat exchange channel, the inlet end of the first heat exchange channel is used to communicate with the refrigerant water outlet, the outlet end of the first heat exchange channel is connected to the cold water component, the inlet end of the second heat exchange channel is used to introduce heat exchange medium, and the outlet end of the second heat exchange channel is used to communicate with the first refrigerant pipeline in the first environment to be cooled.

[0056] Specifically, Figure 1 As shown, the chiller provided in the present application includes a cold water component, which has a refrigerant water outlet, and the refrigerant water outlet is used to output the refrigerant water after cooling to the outside, and the temperature of the refrigerant water after cooling is about 5°C. The chiller also includes a heat exchanger 1, and the heat exchanger 1 has a relatively independent first heat exchange channel and a second heat exchange channel. The inlet end of the first heat exchange channel is used to be connected with the refrigerant water outlet to introduce the refrigerant water in the cold water component into the first heat exchange channel, and the outlet end of the first heat exchange channel is connected with the cold water component so that the refrigerant water after heat exchange can enter the cold water component again to achieve recycling. The inlet end of the second heat exchange channel is used to introduce heat exchange medium, and the outlet end of the second heat exchange channel is used to communicate with the first refrigerant pipeline in the first environment to be cooled, wherein the first environment to be cooled is located on a ship, and operating equipment for the operation of the hull is placed in the first environment to be cooled. The first refrigerant pipeline The operating equipment and the running equipment are both in the first environment to be cooled, so as to cool down the running equipment in the first environment to be cooled. The temperature of the heat exchange medium before being introduced is about 30°C. After the refrigerant water at about 5°C exchanges heat with the heat exchange medium at about 30°C, the temperature of the heat exchange medium drops to about 24°C. If the refrigerant water at about 5°C is used to directly cool down the running equipment, the higher temperature in the first environment to be cooled will cause condensation on the running equipment during the cooling process of the running equipment. The occurrence of condensation will not only reduce the cooling efficiency of the running equipment, but also cause a short circuit in the internal circuit of the running equipment. When the heat exchange medium at 24°C after heat exchange is used to cool down the running equipment, the temperature difference between the temperature in the first environment to be cooled and 24°C is not large, so condensation will not occur on the surface of the running equipment during the cooling process. The heat exchange medium is fresh water.

[0057] The chiller in the present application can use low-temperature refrigerant water to exchange heat with high-temperature heat exchange medium by adding a heat exchanger 1 to reduce the temperature of the heat exchange medium, and transport the heat exchange medium after the temperature is reduced to the first refrigerant pipeline in the first cooling environment to cool the operating equipment in the first cooling environment. The chiller in the prior art only uses refrigerant water at about 5°C to cool the operating equipment. Since the temperature of the refrigerant water is too low (about 5°C), it is easy to cause condensation on the surface of the operating equipment, thereby causing faults such as short circuit of the operating equipment. The present application sets a special heat exchanger 1 to exchange heat with part of the 5°C refrigerant water and the heat exchange medium at about 30°C, reduce the temperature of the heat exchange medium to about 24°C, and then transport the heat exchange medium at about 24°C to the first refrigerant pipeline in the first cooling environment to cool the operating equipment in the first cooling environment. Because the temperature of about 24°C is not much different from the temperature of the environment where the operating equipment is located, it can effectively avoid the generation of condensation and ensure the safe and stable operation of the operating equipment. Since the condensation phenomenon on the surface of the running equipment is avoided, the chiller of the present application can effectively reduce the short-circuit failure of the equipment caused by condensed water, thereby increasing the service life of the equipment, reducing maintenance costs, and indirectly improving the operating efficiency and economy of the ship. By optimizing the use of refrigerant water, the chiller of the present application can use the refrigerant more efficiently and reduce unnecessary waste of cold. For example, when the temperature of the refrigerant water rises after passing through the heat exchanger 1 and exchanging heat with the heat exchange medium, this part of the heat can be reused instead of being directly discharged into the environment, which not only improves the overall efficiency of the system, but also helps to reduce energy consumption and environmental pollution.

[0058] Furthermore, the chiller also includes: a diverter component 2, which is arranged on the first pipe between the refrigerant water outlet and the first heat exchange channel. The diverter component 2 has a first inlet 21, a first outlet 22 and a second outlet 23. The first inlet 21 is used to communicate with the refrigerant water outlet, the first outlet 22 is used to communicate with the first refrigerant pipe, and the second outlet 23 is used to communicate with the second refrigerant pipe in the second environment to be cooled.

[0059] Specifically, the chiller also includes a diverter component 2 arranged on the first pipe between the refrigerant water outlet and the first heat exchange channel. The diverter component 2 is a three-way proportional valve in this embodiment. The diverter component 2 has a first inlet 21, a first outlet 22 and a second outlet 23, wherein the first inlet 21 is used to communicate with the refrigerant water outlet, the first outlet 22 is used to communicate with the first refrigerant pipe, and the second outlet 23 is used to communicate with the second refrigerant pipe. The second refrigerant pipe is in a second environment to be cooled, and the second environment to be cooled is used to provide a resting place for passengers and crew members.

[0060] This application can accurately control the flow of refrigerant water to different cooling environments through the adjustment of the three-way proportional valve, thereby accurately controlling the temperature of the refrigerant water. For the resting places for cabin personnel and passengers, the temperature of the refrigerant water can be maintained at 5°C, providing efficient refrigeration and dehumidification effects; and for operating equipment, the temperature of the refrigerant water can be maintained at around 24°C to avoid condensation due to low temperature and ensure the normal operation of the equipment. When cooling the operating equipment on the ship, by controlling the temperature of the refrigerant water at around 24°C, condensation on the surface of the equipment is effectively avoided, reducing the occurrence of equipment short circuits, corrosion and other faults, improving the reliability and service life of the equipment, and ensuring the stable operation of the ship. This application is improved on the basis of the original single-temperature water outlet solution of the chiller. The selection of system components remains basically unchanged, and the structural changes are minor. Therefore, the system has high reliability and low maintenance costs, and can quickly adapt to different operating environments and needs. By precisely controlling the heat exchange process between refrigerant water and heat exchange medium, the chiller of the present application can maintain a stable water outlet temperature under different environmental conditions, and can provide stable and reliable services whether for cabin refrigeration or equipment cooling, thereby improving the stability of the entire ship's operation.

[0061] Furthermore, the chiller also includes: a first temperature detection component, which is arranged at the outlet of the second heat exchange channel to detect the first real-time temperature of the heat exchange medium after heat exchange, so as to control the opening of the first inlet 21 according to the first real-time temperature.

[0062] Specifically, by detecting the temperature of the refrigerant water after heat exchange in real time through the first temperature detection component, the opening of the three-way proportional control valve can be controlled more accurately, and more specifically, the temperature of the first inlet 21 can be controlled in real time. The first temperature detection component can feedback the change of the refrigerant water temperature in real time, so that the system can quickly respond to the changes in ambient temperature and humidity, and avoid the condensation problem of the equipment caused by the fluctuation of the refrigerant water temperature. Through this feedback mechanism, the stable operation of the system can be maintained and the failure rate can be reduced. By accurately controlling the temperature of the refrigerant water, the condensation problem of the equipment caused by too low temperature can be avoided, thereby reducing the occurrence of equipment short circuit, corrosion and other failures, and extending the service life of the equipment. At the same time, it also reduces maintenance costs and downtime risks, and improves the overall reliability of the system. The addition of the first temperature detection component enables the system to automatically adjust the temperature of the refrigerant water, simplifying the operation process. The operator does not need to manually adjust the equipment frequently, and the system can automatically optimize the operating state according to the real-time temperature, reducing the difficulty of operation and the possibility of human error. This improvement enables the chiller to better adapt to different environmental conditions and equipment requirements. For example, in different seasons and under different humidity conditions, the system can monitor temperature changes in real time through the first temperature detection component, and adjust the opening of the three-way proportional control valve according to the changes to meet the temperature requirements under different working conditions.

[0063] Furthermore, the cold water assembly further includes a compressor 7 and a condenser 4, the outlet end of the compressor 7 is connected to the inlet end of the condenser 4, and the cold water assembly further includes:

[0064] A second temperature detection component is provided at the inlet end of the first heat exchange channel to detect the real-time inlet water temperature of the refrigerant water entering the first heat exchange channel;

[0065] The third temperature detection component is arranged on the second pipeline between the outlet end of the first heat exchange channel and the first refrigerant pipeline to detect the real-time outlet water temperature of the refrigerant water after heat exchange, so as to control the operating frequency of the compressor 7 according to the temperature difference between the real-time inlet water temperature and the real-time outlet water temperature.

[0066] Specifically, the chiller also includes a compressor 7 and a condenser 4, and the outlet end of the compressor 7 is connected to the inlet end of the condenser 4. The chiller also includes a second temperature detection component arranged at the inlet end of the first heat exchange channel to detect the real-time water inlet temperature of the refrigerant water entering the first heat exchange channel. A third temperature detection component is arranged on the second pipeline between the outlet end of the first heat exchange channel and the first refrigerant pipeline to detect the real-time outlet water temperature of the refrigerant water after heat exchange, so that the operating frequency of the compressor 7 can be controlled according to the temperature difference between the real-time inlet water temperature and the real-time outlet water temperature.

[0067] By providing a second temperature detection member and a third temperature detection member, the inlet temperature and outlet temperature of the refrigerant water can be monitored in real time. By calculating the temperature difference between the two, the operating frequency of the compressor 7 can be accurately adjusted to ensure the stability and accuracy of the refrigerant water temperature. This temperature control method can avoid the instability of the refrigeration effect caused by temperature fluctuations and improve the refrigeration efficiency of the system. By monitoring the temperature of the refrigerant water in real time and adjusting the operating frequency of the compressor 7 according to the temperature difference, the overheating or overcooling phenomenon caused by improper temperature control of the system can be effectively prevented, the system can be frequently started and stopped, the system failure rate can be reduced, and the service life of the chiller can be extended. Since the temperature of the refrigerant water can be accurately controlled, the energy waste caused by improper temperature control is avoided. The scheme of the present invention can adjust the operating frequency of the compressor 7 according to different use conditions to adapt to different refrigeration needs. For example, when the refrigeration demand of the cabin and the equipment on board changes, the system can respond quickly by adjusting the operating frequency of the compressor 7 to ensure that the refrigerant water temperature meets the needs under different working conditions. The temperature of the refrigerant water is automatically adjusted by adjusting the frequency of the temperature detection element and the compressor 7, which simplifies the control logic of the system, makes the operation easier, and also reduces the complexity of system maintenance.

[0068] Furthermore, the cold water component also includes an evaporator 5, a throttling component 6 is provided on the pipeline between the outlet end of the condenser 4 and the inlet end of the evaporator 5, the outlet end of the evaporator 5 is a refrigerant water outlet, and the cold water component also includes:

[0069] A second temperature detection component is provided at the inlet end of the first heat exchange channel to detect the real-time inlet water temperature of the refrigerant water entering the first heat exchange channel;

[0070] The third temperature detection component is arranged on the second pipeline between the outlet end of the first heat exchange channel and the first refrigerant pipeline to detect the real-time outlet water temperature of the refrigerant water after heat exchange, so as to control the opening of the throttling component 6 according to the temperature difference between the real-time inlet water temperature and the real-time outlet water temperature.

[0071] Specifically, the cold water component also includes an evaporator 5, and a throttling component 6 is provided on the pipeline between the outlet end of the condenser 4 and the inlet end of the evaporator 5, wherein the outlet end of the evaporator 5 is a refrigerant water outlet. The cold water component also includes: a second temperature detection component provided at the inlet end of the first heat exchange channel to detect the real-time inlet water temperature of the refrigerant water entering the first heat exchange channel, and a third temperature detection component is provided on the second pipeline between the outlet end of the first heat exchange channel and the first refrigerant pipeline, and the third temperature detection component is used to detect the real-time outlet water temperature of the refrigerant water after heat exchange, so as to control the opening of the throttling component 6 according to the temperature difference between the real-time inlet water temperature and the real-time outlet water temperature. Specifically, the setting of the second temperature detection component and the third temperature detection component provides the system with key temperature feedback information, so that the control system can dynamically adjust the opening of the throttling component 6 according to the actual temperature change, to ensure that the temperature of the refrigerant water is accurately controlled, and will not affect the refrigeration effect or cause equipment failure due to excessively high or low temperature. The second and third temperature detection components are set up so that the system can monitor the inlet and outlet temperatures of the refrigerant water in real time. By adjusting the opening of the throttling component 6, the temperature of the refrigerant water is ensured to be precisely controlled to meet the refrigeration requirements in different environments. By dynamically adjusting the opening of the throttling component 6, the refrigerant water temperature can be prevented from being too high or too low, the occurrence of equipment failures can be reduced, and the overall reliability of the system can be improved. In particular, for the outlet temperature control of 24°C constant temperature fresh water, by accurately monitoring and adjusting the temperature of the refrigerant water, the condensation phenomenon caused by low-temperature refrigeration of the running equipment can be effectively avoided, ensuring the safe and stable operation of the equipment.

[0072] Furthermore, the chiller also includes: a heat exchange medium supply system 8, the heat exchange medium supply system 8 has a heat exchange medium outlet, the heat exchange medium outlet is connected to the inlet end of the second heat exchange channel, and is used to introduce the heat exchange medium into the second heat exchange channel.

[0073] Specifically, the chiller also includes a heat exchange medium supply system 8, which is used to store heat exchange medium. The heat exchange medium in this embodiment is fresh water. The heat exchange medium supply system 8 has a heat exchange medium outlet, and the heat exchange interface outlet is connected to the inlet end of the second heat exchange channel to allow the heat exchange medium to be introduced into the second heat exchange channel.

[0074] By introducing the heat exchange medium supply system 8, the system can independently control the supply of fresh water, ensure the constant temperature and stability of fresh water, and further improve the reliability and flexibility of the system. The flow and temperature of the refrigerant water are adjusted in real time by the three-way proportional regulating valve and the control system to ensure the stability of the outlet water temperature of 5°C refrigerant water and 24°C constant temperature fresh water, avoiding the influence of temperature fluctuation on the refrigeration effect. The heat exchange medium supply system 8 can stabilize the air pressure in the first pipeline, prevent system failures caused by air pressure fluctuations, and improve the operation stability of the system. When 24°C constant temperature fresh water is supplied to the operating equipment, condensation will not be generated due to too low temperature, avoiding short circuit failure of the equipment caused by condensation, and ensuring the normal operation of the equipment. Through the heat exchanger 1, part of the 5°C refrigerant water exchanges heat with the fresh water to generate 24°C constant temperature fresh water, reducing excessive cooling of the equipment and avoiding energy waste. The design of the heat exchange medium supply system 8 makes the chiller more efficient when discharging water at multiple temperatures, reduces the increase in energy consumption caused by improper temperature regulation, and improves the energy efficiency ratio of the overall system.

[0075] The present application also provides a refrigeration system, which includes the above-mentioned chiller, and the refrigeration system also includes a first refrigerant pipe and a second refrigerant pipe connected to the refrigerant water outlet of the chiller.

[0076] The present application also provides a heat exchange method, which is applied to the above-mentioned chiller, and the heat exchange method includes:

[0077] In response to user operation, the heat exchange medium in the heat exchange medium supply system 8 is controlled to enter the second heat exchange channel from the outlet end of the heat exchange medium supply system 8;

[0078] The refrigerant water in the cold water component is controlled to be transported to the first heat exchange channel to exchange heat with the heat exchange medium in the second heat exchange channel.

[0079] Specifically, the present application also provides a heat exchange method, which is applied to the above-mentioned chiller. The heat exchange method includes responding to the user's operation, then controlling the heat exchange medium in the heat exchange medium supply system 8 to enter the second heat exchange channel from the outlet end of the heat exchange medium supply system 8, controlling the refrigerant water in the cold water component to be transported to the first heat exchange channel, and exchanging heat with the heat exchange medium in the second heat exchange channel, that is, fresh water.

[0080] Furthermore, the heat exchange method further comprises: obtaining a first real-time temperature at an outlet of the second heat exchange channel;

[0081] When it is determined that the first real-time temperature is greater than a preset temperature range, controlling to increase the opening of the first inlet in the diversion component to increase the flow of the refrigerant water entering the first heat exchange channel;

[0082] When it is determined that the first real-time temperature is less than a preset temperature range, the opening of the first inlet in the diversion component is controlled to be reduced to reduce the flow rate of the refrigerant water entering the first heat exchange channel;

[0083] When it is determined that the first real-time temperature is within the preset temperature range, controlling the refrigerant water to continue to transport the refrigerant water into the first heat exchange channel at the current flow rate;

[0084] The step of obtaining the preset temperature range includes:

[0085] Acquire the temperature of the first environment to be cooled;

[0086] Obtaining the humidity of the first environment to be cooled;

[0087] According to humidity and temperature, the dew point temperature is calculated;

[0088] Based on the dew point temperature, increase or decrease the floating temperature value to obtain the preset temperature range;

[0089] Among them, the floating temperature value is 2℃.

[0090] Specifically, the heat exchange method further includes obtaining a first real-time temperature at the outlet of the second heat exchange channel, judging the magnitude of the first real-time temperature, and when it is judged that the first real-time temperature is greater than a preset temperature range, it indicates that the temperature of the fresh water after the heat exchange is too high, so it is necessary to control the increase of the opening of the first inlet in the diversion component, thereby increasing the flow rate of the refrigerant water entering the first heat exchange channel, so as to accelerate the reduction of the temperature of the fresh water, so that the temperature of the fresh water flowing out of the outlet of the second heat exchange channel is within the preset temperature range;

[0091] When it is judged that the first real-time temperature is less than the preset temperature range, it means that the temperature of the fresh water after heat exchange is too low, and it is necessary to control and reduce the opening of the first inlet in the diversion component to reduce the flow of the refrigerant water entering the first heat exchange channel, so as to slow down the rate at which the temperature of the fresh water decreases, so that the temperature of the fresh water flowing out of the second heat exchange channel is within the preset temperature range;

[0092] When it is determined that the first real-time temperature is within the preset temperature range, the refrigerant water is controlled to continue to be transported into the first heat exchange channel at the current flow rate. When determining the preset temperature range, it is necessary to obtain the temperature of the first environment to be cooled in which the operating equipment is located, and to obtain the humidity of the first environment to be cooled in which the operating equipment is located. The dew point temperature is calculated based on the humidity and temperature, and the floating temperature value is correspondingly increased or decreased based on the dew point temperature to obtain the preset temperature range. The method of calculating the dew point temperature belongs to the prior art and will not be repeated here.

[0093] The present application ensures that the temperature of the fresh water after heat exchange is always within the preset temperature range by real-time monitoring and adjusting the refrigerant water flow of the heat exchanger. Since the preset temperature range is calculated based on the dew point temperature, it can effectively avoid condensation of the equipment due to too low temperature, thereby preventing equipment short circuit and other faults. Through the cooperation of the three-way proportional regulating valve and the first temperature detection member, the temperature of the fresh water can be accurately controlled to ensure that the equipment works at a suitable temperature, thereby improving the reliability and stability of the system. When the first real-time temperature is monitored to be greater than or less than the preset temperature range, the system can quickly adjust the opening of the diversion component to quickly return the fresh water temperature to the preset temperature range, thereby avoiding the impact of temperature fluctuations on the equipment. By adjusting the refrigerant water flow to control the heat exchange amount, the system can avoid energy waste while meeting different refrigeration requirements. Especially when the ambient temperature and humidity change greatly, the system can be dynamically adjusted according to actual needs, thereby improving energy utilization efficiency. Adding a heat exchanger 1 and a three-way proportional regulating valve to the original chiller has a small structural change, a short development cycle, low cost, and is easy to be transformed and upgraded in the existing system.

[0094] Furthermore, the heat exchange method further includes: obtaining the real-time inlet water temperature of the refrigerant water at the inlet end of the first heat exchange channel;

[0095] Obtaining the real-time outlet water temperature of the refrigerant water after heat exchange at the outlet end of the first heat exchange channel;

[0096] Obtain the temperature difference between the real-time water inlet temperature and the real-time water outlet temperature;

[0097] When it is judged that the temperature difference is greater than the set temperature range, the operating frequency of the compressor is increased;

[0098] When it is determined that the temperature difference is within the set temperature range, the operating frequency of the compressor is controlled to be reduced;

[0099] When it is determined that the temperature difference is equal to the set temperature range, the compressor is controlled to run at the frequency at the current moment.

[0100] Specifically, the heat exchange method also includes obtaining the real-time inlet water temperature of the refrigerant water at the inlet end of the first heat exchange channel, obtaining the real-time outlet water temperature of the refrigerant water after heat exchange at the outlet end of the first heat exchange channel, calculating the temperature difference between the real-time inlet water temperature and the real-time outlet water temperature, judging the size of the temperature difference to control the operating frequency of the compressor. When it is judged that the temperature difference is greater than the set temperature range, it indicates that the outlet water temperature of the refrigerant water is less than 5°C at this time, and it is necessary to increase the operating frequency of the compressor accordingly to reduce the outlet water temperature of the refrigerant water. When it is judged that the temperature difference is less than the set temperature range, it indicates that the outlet water temperature of the refrigerant water is greater than 5°C at this time, and the operating frequency of the compressor is controlled to be reduced to increase the outlet water temperature of the refrigerant water. When it is judged that the temperature difference is within the set temperature range, it indicates that the outlet water temperature of the refrigerant water is about 5°C, and the compressor is controlled to operate at the frequency at the current moment. The value of the set temperature range can be obtained through experience or through experiments, and no limitation is made to the source of the value of the set temperature range.

[0101] Furthermore, the heat exchange method further includes: obtaining the real-time inlet water temperature of the refrigerant water at the inlet end of the first heat exchange channel;

[0102] Obtaining the real-time outlet water temperature of the refrigerant water after heat exchange at the outlet end of the first heat exchange channel;

[0103] Obtain the temperature difference between the real-time water inlet temperature and the real-time water outlet temperature;

[0104] When it is judged that the temperature difference is greater than the set temperature range, the opening of the throttling component is increased by control;

[0105] When it is judged that the temperature difference is less than the set temperature range, the opening of the throttling component is controlled to be reduced;

[0106] When it is determined that the temperature difference is equal to the set temperature range, the throttling component is controlled to operate at the opening at the current moment.

[0107] Specifically, the heat exchange method also includes controlling the opening of the throttling component according to the size of the temperature difference. The throttling component in this embodiment can be an electronic expansion valve. The opening of the throttling component can be controlled in real time according to the size of the temperature difference to achieve control of the flow of the refrigerant water. By real-time monitoring of the inlet and outlet temperatures of the refrigerant water and calculating the temperature difference, the temperature change of the refrigerant water can be more accurately judged, thereby more finely adjusting the operating frequency of the compressor 7 and the opening of the electronic expansion valve to ensure that the temperature of the refrigerant water is always within a temperature range of about 5°C. Real-time monitoring and adjustment of the refrigerant water temperature can avoid large fluctuations in temperature and ensure the stability and reliability of the system operation. By accurately controlling the operating frequency of the compressor 7, unnecessary energy consumption can be avoided and the energy utilization efficiency of the system can be improved. Stable control of the cooling water temperature can reduce equipment failures caused by excessively high or low temperatures and extend the service life of the equipment. This method can dynamically adjust the temperature of the refrigerant water according to changes in ambient temperature and humidity, ensuring that equipment and personnel in different environments can obtain suitable refrigeration effects and avoid the generation of problems such as condensation.

[0108] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0109] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0110] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0111] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0112] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0113] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A chiller, characterized in that: include: A cold water component, having a cold water outlet for outputting the cold water after cooling; A heat exchanger (1), wherein the heat exchanger (1) has a relatively independent first heat exchange channel and a second heat exchange channel, wherein the inlet end of the first heat exchange channel is used to communicate with the refrigerant water outlet, the outlet end of the first heat exchange channel is connected to the cold water component, the inlet end of the second heat exchange channel is used to introduce heat exchange medium, and the outlet end of the second heat exchange channel is used to communicate with a first refrigerant pipeline in a first environment to be cooled.

2. The chiller according to claim 1, characterized in that: The chiller also includes: A diverter component (2), the diverter component (2) is arranged on the first pipeline between the refrigerant water outlet and the first heat exchange channel, the diverter component (2) has a first inlet (21), a first outlet (22) and a second outlet (23), the first inlet (21) is used to communicate with the refrigerant water outlet, the first outlet (22) is used to communicate with the first refrigerant pipeline, and the second outlet (23) is used to communicate with a second refrigerant pipeline in a second environment to be cooled.

3. The chiller according to claim 2, characterized in that: The chiller also includes: A first temperature detection component is provided at the outlet of the second heat exchange channel to detect a first real-time temperature of the heat exchange medium after heat exchange, so as to control the opening of the first inlet (21) according to the first real-time temperature.

4. The chiller according to claim 1, characterized in that: The cold water component further comprises a compressor (7) and a condenser (4), the outlet end of the compressor (7) being in communication with the inlet end of the condenser (4), and the cold water component further comprises: A second temperature detection component, which is disposed at the inlet end of the first heat exchange channel to detect the real-time inlet water temperature of the refrigerant water entering the first heat exchange channel; A third temperature detection component is arranged on the second pipeline between the outlet end of the first heat exchange channel and the first refrigerant pipeline to detect the real-time outlet water temperature of the refrigerant water after heat exchange, so as to control the operating frequency of the compressor (7) according to the temperature difference between the real-time inlet water temperature and the real-time outlet water temperature.

5. The chiller according to claim 4, characterized in that: The cold water component further comprises an evaporator (5), a throttling component (6) is provided on the pipeline between the outlet end of the condenser (4) and the inlet end of the evaporator (5), the outlet end of the evaporator (5) is the refrigerant water outlet, and the cold water component further comprises: A second temperature detection component, which is disposed at the inlet end of the first heat exchange channel to detect the real-time inlet water temperature of the refrigerant water entering the first heat exchange channel; A third temperature detecting component is arranged on the second pipeline between the outlet end of the first heat exchange channel and the first refrigerant pipeline to detect the real-time outlet water temperature of the refrigerant water after heat exchange, so as to control the opening of the throttling component (6) according to the temperature difference between the real-time inlet water temperature and the real-time outlet water temperature.

6. The water chiller according to claim 1, characterized in that: The chiller also includes: A heat exchange medium supply system (8), wherein the heat exchange medium supply system (8) has a heat exchange medium outlet, wherein the heat exchange medium outlet is connected to the inlet end of the second heat exchange channel and is used to introduce the heat exchange medium into the second heat exchange channel.

7. A refrigeration system, characterized in that: The refrigeration system comprises the chiller according to any one of claims 1 to 6, and the refrigeration system further comprises a first refrigerant pipe and a second refrigerant pipe connected to a refrigerant water outlet in the chiller.

8. A heat exchange method, characterized in that: The heat exchange method is applied to a chiller as claimed in any one of claims 1 to 6, and the heat exchange method comprises: In response to user operation, controlling the heat exchange medium in the heat exchange medium supply system (8) to enter the second heat exchange channel from the outlet end of the heat exchange medium supply system (8); The refrigerant water in the cold water component is controlled to be transported to the first heat exchange channel to exchange heat with the heat exchange medium in the second heat exchange channel.

9. The heat exchange method according to claim 8, characterized in that: The heat exchange method further comprises: Acquire a first real-time temperature at an outlet of the second heat exchange channel; When it is determined that the first real-time temperature is greater than a preset temperature range, controlling to increase the opening of the first inlet in the diversion component to increase the flow of the refrigerant water entering the first heat exchange channel; When it is determined that the first real-time temperature is less than the preset temperature range, controlling to reduce the opening of the first inlet in the diversion component to reduce the flow of the refrigerant water entering the first heat exchange channel; When it is determined that the first real-time temperature is within the preset temperature range, the refrigerant water is controlled to continue to be transported into the first heat exchange channel at the current flow rate.

10. The heat exchange method according to claim 8, characterized in that: The heat exchange method further comprises: Obtaining the real-time inlet water temperature of the refrigerant water at the inlet end of the first heat exchange channel; Obtaining the real-time outlet water temperature of the refrigerant water after heat exchange at the outlet end of the first heat exchange channel; Obtaining the temperature difference between the real-time water inlet temperature and the real-time water outlet temperature; wherein: When it is determined that the temperature difference is greater than the set temperature range, controlling to increase the operating frequency of the compressor; When it is determined that the temperature difference is less than the set temperature range, controlling to reduce the operating frequency of the compressor; When it is determined that the temperature difference is within the set temperature range, the compressor is controlled to operate at the frequency at the current moment.

11. The heat exchange method according to claim 8, characterized in that: The heat exchange method further comprises: Obtaining the real-time inlet water temperature of the refrigerant water at the inlet end of the first heat exchange channel; Obtaining the real-time outlet water temperature of the refrigerant water after heat exchange at the outlet end of the first heat exchange channel; Obtaining the temperature difference between the real-time water inlet temperature and the real-time water outlet temperature; wherein: When it is determined that the temperature difference is greater than a set temperature range, controlling to increase the opening of the throttling component; When it is determined that the temperature difference is less than the set temperature range, controlling to reduce the opening of the throttling component; When it is determined that the temperature difference is equal to the set temperature range, the throttling component is controlled to operate at the opening degree at the current moment.

12. The heat exchange method according to claim 9, characterized in that: The step of obtaining the preset temperature range includes: Acquire the temperature of the first environment to be cooled; Obtaining the humidity of the first environment to be cooled; Calculating the dew point temperature according to the humidity and the temperature; Based on the dew point temperature, increasing or decreasing the floating temperature value to obtain the preset temperature range; Wherein, the floating temperature value is 2°C.

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