Combined refrigeration system, control method and related device

Abstract

The invention provides a combined refrigerating system, a control method and a related device, and relates to the technical field of air conditioners. According to the combined refrigeration system, combined tail end configuration of the dry type wind disc and the capillary radiation system is adopted, refrigeration water with the water temperature larger than the environment dew point temperature is provided for the capillary radiation system and the dry type wind disc at the same time through the refrigeration system, collaborative refrigeration of the dry type wind disc and the capillary radiation system is achieved, and therefore the effect that the temperature of the dry type wind disc is larger than the environment dew point temperature is achieved under the limited capillary radiation area. The dry type air disc and the capillary radiation system jointly provide higher refrigerating capacity, the refrigerating capacity is improved, the efficient refrigerating requirement in a large space scene is met, and meanwhile the condensation risk can be avoided.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and in particular to a combined refrigeration system, control method and related device. Background Technology

[0002] Currently, as people's demands for comfortable and healthy living environments continue to rise, traditional air conditioning (mainly for convection heat exchange) and underfloor heating (single heating function) are no longer sufficient to meet the comprehensive needs for precise temperature and humidity control and low energy consumption. Against this backdrop, the Five Constant Technology System (constant temperature, constant humidity, constant oxygen, constant cleanliness, and constant quietness), with independent temperature and humidity control technology at its core, is gradually becoming a popular integrated smart home solution.

[0003] In related technologies, the terminal systems of independently controlled temperature and humidity air conditioning systems typically adopt a combination of "capillary radiant system + floor ventilation system". Specifically, the capillary radiant system achieves cooling through a capillary network arranged in the ceiling or floor, utilizing the radiative heat exchange of low-temperature water (16℃ to 19℃). The floor ventilation system processes air humidity through a fresh air handling unit and assists in regulating temperature, working in conjunction with the capillary radiant system to maintain a constant temperature and humidity indoor environment.

[0004] However, the inventors discovered that the above-mentioned combination of terminal systems has insufficient cooling capacity in some scenarios. Summary of the Invention

[0005] This application provides a combined refrigeration system, control method, and related device to solve the problem that the terminal system in the related technology, which adopts a combination of "capillary radiation system + floor fresh air system", has insufficient cooling capacity in some scenarios.

[0006] In a first aspect, this application provides a combined refrigeration system, comprising: a refrigeration system, and a dry fan coil unit and a capillary radiant system respectively connected to the refrigeration system; the dry fan coil unit is used for refrigeration through air convection heat exchange; the capillary radiant system is used for refrigeration through radiation heat exchange; and the refrigeration system is used to simultaneously provide refrigeration water to the dry fan coil unit and the capillary radiant system, wherein the temperature of the refrigeration water is higher than the ambient dew point temperature.

[0007] In one possible implementation, neither the dry fan coil unit nor the capillary radiation system has condensation on its surface during operation.

[0008] In one possible implementation, the dry fan coil unit includes a surface cooler with at least three rows of tubing.

[0009] In one possible implementation, the surface cooler employs a nano-coating or a phase change material.

[0010] In one possible implementation, the dry fan coil unit includes a brushless DC motor used to drive the fan.

[0011] In one possible implementation, the combined refrigeration system further includes a zone configuration module; the zone configuration module is used to dynamically adjust the ratio of radiative heat transfer corresponding to the capillary radiation system and air convection heat transfer corresponding to the dry fan coil unit according to the zone function.

[0012] Secondly, this application provides a control method for a combined refrigeration system, applied to the combined refrigeration system provided in the first aspect above. The control method includes: acquiring current environmental information of a target area and the current temperature of the cooling water in the combined refrigeration system; determining the current environmental dew point temperature of the target area based on the current environmental information; and controlling the refrigeration mode of the combined refrigeration system based on the current environmental dew point temperature and the current cooling water temperature.

[0013] In one possible implementation, the cooling mode of the combined refrigeration system is controlled based on the current ambient dew point temperature and the current cooling water temperature, including: obtaining the temperature difference based on the current ambient dew point temperature and the current cooling water temperature; determining whether the temperature difference is greater than a preset temperature threshold; if the temperature difference is greater than the preset temperature threshold, then controlling the cooling mode of the combined refrigeration system to be a combined cooling mode of capillary radiation system and dry fan coil unit; if the temperature difference is less than or equal to the preset temperature threshold, then controlling the cooling mode of the combined refrigeration system to be dry fan coil unit cooling.

[0014] Thirdly, this application provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the control method of the combined refrigeration system as provided in the second aspect above.

[0015] Fourthly, this application provides a computer program product, comprising: a computer program that, when executed by a processor, implements the control method for the combined refrigeration system provided in the second aspect above.

[0016] This application provides a combined refrigeration system, control method, and related apparatus. The combined refrigeration system includes a refrigeration system and a dry fan coil unit and a capillary radiant system, each connected to the refrigeration system. The dry fan coil unit is used for cooling through air convection heat exchange; the capillary radiant system is used for cooling through radiation heat exchange; and the refrigeration system simultaneously provides cooling water to both the dry fan coil unit and the capillary radiant system, the water temperature of which is higher than the ambient dew point temperature. This application employs a combined terminal configuration of the dry fan coil unit and the capillary radiant system, simultaneously providing cooling water at a temperature higher than the ambient dew point temperature to both systems. This achieves synergistic cooling by the dry fan coil unit and the capillary radiant system, thereby enabling a higher cooling capacity to be provided jointly by the dry fan coil unit and the capillary radiant system within a limited capillary radiant area. This improves cooling capacity to meet the high-efficiency cooling requirements in large-space scenarios, while avoiding the risk of condensation. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] Figure 1 A schematic diagram of the structure of the combined refrigeration system provided in the embodiments of this application. Figure 1 ;

[0019] Figure 2 A schematic diagram of the structure of the combined refrigeration system provided in the embodiments of this application. Figure 2 ;

[0020] Figure 3 This is a flowchart illustrating the control method for a combined refrigeration system provided in an embodiment of this application.

[0021] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0022] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0023] In related technologies, the terminal systems of independently controlled temperature and humidity air conditioning systems typically employ a combination of a capillary radiant system and a floor ventilation system. Specifically, the capillary radiant system uses a network of capillary tubes installed in the ceiling or floor to achieve cooling through radiative heat exchange with low-temperature water (16°C to 19°C). However, the radiative cooling capacity of a capillary radiant system per unit area is limited, meaning that in some large spaces, using only a capillary radiant system may not meet the cooling requirements. Furthermore, in large spaces such as large rooms, the area that can be fitted with capillary radiant systems is limited; in such cases, using only a capillary radiant system will also result in insufficient cooling capacity to meet the cooling needs of the large space.

[0024] In related technologies, to address the problem that capillary radiation cooling systems alone cannot meet cooling requirements in some large-scale space scenarios, the common approach is to lower the water temperature of the water used for capillary radiation cooling in order to increase the capillary radiation cooling capacity. However, when the water temperature of the cooling water is lower than the ambient dew point temperature, condensation is easily generated on the surface of the capillary network in the capillary radiation system, which increases the risk of condensation in the system.

[0025] Based on the problems existing in related technologies, the embodiments of this application adopt a combined terminal configuration of dry fan coil unit and capillary radiation system. The cooling system simultaneously provides cooling water with a temperature higher than the ambient dew point temperature to both the capillary radiation system and the dry fan coil unit, realizing synergistic cooling between the dry fan coil unit and the capillary radiation system. This allows for higher cooling capacity to be provided by both the dry fan coil unit and the capillary radiation system within a limited capillary radiation area, thereby improving cooling capacity to meet the high-efficiency cooling needs in large space scenarios. At the same time, it can avoid the risk of condensation.

[0026] The application scenarios of the embodiments of this application will be described below first.

[0027] The combined refrigeration system provided in this application embodiment is applicable to five-constant technology systems that require constant temperature, constant humidity, constant quietness, constant oxygen, and constant cleanliness in large-scale spatial environments, and can serve as the core refrigeration unit of such systems. For example, the combined refrigeration system provided in this application embodiment is suitable for five-constant technology systems in large spaces such as commercial complexes, large office spaces, and residential living rooms or multi-functional halls.

[0028] It should be noted that the above descriptions of application scenarios are merely examples and are not intended to limit the application scenarios of the combined refrigeration system provided in this application embodiment. In addition to being suitable for the aforementioned five-constant technology system for large spaces, the combined refrigeration system provided in this application embodiment can also be applied to any space scenario requiring high cooling efficiency.

[0029] The following is combined with Figure 1First, the combined refrigeration system provided in the embodiments of this application will be described in detail.

[0030] Figure 1 A schematic diagram of the structure of the combined refrigeration system provided in the embodiments of this application. Figure 1 .like Figure 1 As shown, the combined refrigeration system includes a refrigeration system, as well as a dry fan coil unit and a capillary radiation system, which are respectively connected to the refrigeration system.

[0031] The dry fan coil unit is used for cooling through air convection heat exchange; the capillary radiation system is used for cooling through radiation heat exchange; and the cooling system is used to simultaneously supply cooling water to both the dry fan coil unit and the capillary radiation system, with the water temperature being higher than the ambient dew point temperature.

[0032] For example, a dry fan coil unit can also be described as a dry fan coil unit, which is an air handling device that does not produce condensate. Compared to traditional wet fan coil units, dry fan coil units use cooling water at a temperature higher than the ambient dew point temperature of the indoor environment when cooling.

[0033] For example, the specific implementation principle of a dry-type fan coil unit for cooling through air convection heat exchange can be as follows: A fan built into the dry-type fan coil unit drives air to flow through a multi-row pipe structure in the unit's cooling coil. The cooling water flowing in the multi-row pipes of the cooling coil, with a temperature higher than the ambient dew point temperature corresponding to the indoor environment, absorbs heat from the air, lowering the air temperature and thus achieving cooling. It is understood that during this cooling process, because the temperature of the cooling water is higher than the ambient dew point temperature corresponding to the indoor environment, no condensate is produced.

[0034] For example, a capillary radiation system includes multiple capillary networks, which can be arranged on the ceiling (e.g., suspended ceiling), walls (e.g., within a plaster layer), and floor (e.g., between a floor insulation layer and a floorboard) of a large space. This application does not limit this arrangement; the specific arrangement can be determined based on actual application requirements. The capillary tubes can be capillary copper tubes.

[0035] For example, the principle of cooling through radiative heat exchange in a capillary radiation system can be summarized as follows: The refrigeration system supplies cooling water at a temperature higher than the indoor dew point temperature to the capillary radiation system, allowing the cooling water to circulate within each capillary tube of the system. The low temperature of the cooling water is transferred through the capillary tube walls to the surface of the capillary network, forming a uniform low-temperature radiant surface. Indoor objects (such as people and furniture), whose temperatures are higher than this surface, transfer heat to the capillary network through long-wave thermal radiation. The circulating cooling water then carries away the heat, thus achieving cooling. It is understood that during this cooling process, because the temperature of the cooling water is higher than the corresponding indoor dew point temperature, no condensation is produced.

[0036] For example, the temperature of the cooling water can be 16°C, 17°C, 18°C, and 19°C, etc. This application does not limit the temperature of the cooling water, as long as the temperature of the cooling water is higher than the corresponding ambient dew point temperature of the indoor environment.

[0037] It is understood that the ambient dew point temperature of indoor environments is usually 14°C to 15°C. In this embodiment of the application, by using cooling water with a temperature greater than or equal to 16°C and supplying water to the capillary radiation system and dry fan coil unit, condensation can be avoided, thereby avoiding the risk of condensation.

[0038] It is understood that in the embodiments of this application, the refrigeration system is used to simultaneously provide refrigerated water at a uniform temperature to the capillary radiation system and the dry fan coil unit.

[0039] It is understood that in the combined refrigeration system provided in this application embodiment, when the water temperature of the refrigeration water provided by the refrigeration system is stable at 16°C to 19°C, a uniform low-temperature radiation surface can be formed on the surface of the capillary network in the capillary radiation system. The indoor heat can be safely and continuously removed through the capillary radiation system, thereby maximizing the refrigeration output of the capillary radiation system.

[0040] For example, using the combined cooling system provided in this application embodiment can significantly increase the percentage of cooling capacity transferred through capillary radiation in the combined cooling system, thereby improving user comfort. When the percentage of cooling capacity transferred through capillary radiation exceeds 60% of the total cooling capacity, the reduction in indoor temperature is primarily achieved through radiative heat exchange without a draft. Since the percentage of cooling capacity transferred through capillary radiation is comparable to the proportion of radiative heat dissipation from the human body, this scenario can significantly improve sleep quality.

[0041] For example, the total cooling capacity of the system is the sum of the cooling capacity transferred through capillary radiation and the cooling capacity transferred through air convection heat transfer via the dry fan coil unit.

[0042] For example, the ratio of human body heat dissipation by radiation can be the percentage of the total heat dissipation of the human body through radiation.

[0043] For example, by using the combination of dry fan coil and capillary radiant system provided in the embodiments of this application, the indoor ceiling and floor insulation can reduce the air conditioning load by about 40W.

[0044] In this embodiment, the combined refrigeration system includes a refrigeration system, and a dry fan coil unit and a capillary radiant system respectively connected to the refrigeration system. The dry fan coil unit includes a multi-row tube structure for surface cooling, used for cooling through air convection heat exchange; the capillary radiant system is used for cooling through radiation heat exchange; and the refrigeration system simultaneously provides cooling water to both the surface cooler and the capillary radiant system, the water temperature of which is higher than the ambient dew point temperature. This embodiment employs a combined terminal configuration of the dry fan coil unit and the capillary radiant system. By simultaneously providing cooling water at a temperature higher than the ambient dew point temperature to both the refrigeration system and the dry fan coil unit, the refrigeration system achieves synergistic cooling between the dry fan coil unit and the capillary radiant system. This results in a higher cooling capacity provided by both the dry fan coil unit and the capillary radiant system within a limited capillary radiant area, improving cooling efficiency to meet the high-efficiency cooling requirements in large-space scenarios. Meanwhile, in the combined refrigeration system provided in this application embodiment, the dry fan coil unit and the capillary radiation system can eliminate the need for a mixing pump station and a joint control system by sharing refrigeration water with the same temperature, simplifying the system configuration, making the system simpler and more efficient, and reducing maintenance costs.

[0045] It is understood that the combination of the dry fan coil unit and the capillary radiant system provided in this application embodiment allows for a simplified configuration of the variable-temperature terminal by sharing the same cooling water temperature, thereby optimizing the control system. When this combined refrigeration system is applied to the five-constant technology system, it can improve the stability of the system.

[0046] Optionally, in the combined refrigeration system provided in this application embodiment, neither the dry fan coil unit nor the capillary radiation system has condensation on its surface during operation.

[0047] It is understood that in the combined refrigeration system provided in this application embodiment, the dry fan coil and the capillary radiation system use refrigeration water provided by the refrigeration system with a water temperature higher than the ambient dew point temperature of the indoor environment for refrigeration, which can avoid the generation of condensate during the refrigeration process. Therefore, in the combined refrigeration system provided in this application embodiment, there is no condensate on the surface of the dry fan coil and the capillary radiation system during operation.

[0048] In this embodiment, by ensuring that the surface of the dry fan coil unit remains free of condensation during operation, the condensate treatment components (such as condensate pans and condensate pipes) required by traditional wet fan coil units can be eliminated, simplifying the ceiling structure and eliminating safety hazards such as ceiling water seepage and mold growth. Furthermore, by ensuring that the capillary radiation system remains free of condensation during operation, the risk of condensation can be avoided.

[0049] Optionally, the dry fan coil unit provided in this application embodiment may also integrate a fresh air inlet.

[0050] For example, the fresh air inlet integrated into the dry fan coil unit can be a fresh air inlet with a diameter of 75mm.

[0051] Understandably, by integrating fresh air inlets into dry air coils, it is possible to avoid setting up separate fresh air ducts and inlets in the ceiling, eliminate the need for reserved fresh air inlets, and make the ceiling neater and more aesthetically pleasing. At the same time, dry air coils can improve the comfort of fresh air intake by controlling the mixing of fresh air and cooling air before delivering it into the space.

[0052] Optionally, in the combined refrigeration system provided in the embodiments of this application, the dry fan coil unit includes a surface cooler with at least three rows of tubes.

[0053] For example, the surface cooler is a core component in a dry fan coil unit used for heat exchange.

[0054] For example, the multi-row tube structure of the surface cooler can be three-row tube, four-row tube, five-row tube, etc.

[0055] For example, the surface cooler can be a two-pipe, four-row tube system.

[0056] For example, a multi-row tube surface cooler can be a multi-row tube finned heat exchanger, including multiple rows of copper tubes, aluminum fins, and end plates and supports. The multiple rows of copper tubes are used to transport cold or hot water; the aluminum fins are fitted into the multiple rows of copper tubes to increase the heat exchange area; the end plates and supports are used to fix the multiple rows of copper tubes and aluminum fins.

[0057] For example, a multi-pipe structure can be a two-pipe multi-pipe structure. Here, two pipes mean that the cold and heat sources are transported through different pipelines, which usually include two pipelines: a supply pipe and a return pipe, used to transport cold water and hot water respectively.

[0058] Compared to traditional wet fan coil units, the embodiments of this application increase the heat exchange area and water flow path by increasing the density and length of the cooling coil in the surface cooler of the dry fan coil unit, thereby improving the heat exchange efficiency of the dry fan coil unit when cooling through air convection.

[0059] Optionally, in the combined refrigeration system provided in the embodiments of this application, the surface cooler adopts a nano-coating or a phase change material.

[0060] For example, the nano-coating can be a polytetrafluoroethylene nano-coating, etc. This application does not limit the type of nano-coating, but can determine it according to the actual application requirements.

[0061] For example, the nano-coating can be a functional coating applied to the surface of multiple rows of tubes in the surface cooler, or a functional coating applied to the surface of the fins in the surface cooler. This application does not limit this, and the specific coating can be determined according to the actual application requirements.

[0062] For example, phase change materials can be paraffin-based materials, hydrated salt materials, etc. This application does not limit the type of phase change material; it can be determined according to the actual application requirements.

[0063] For example, phase change materials can be integrated into the fins or end plates of a surface cooler in the form of a filler layer.

[0064] In this embodiment, the surface cooler uses a nano-coating to improve its heat exchange efficiency and avoid condensation and fouling. The surface cooler also uses a phase change material to maintain a stable heat exchange temperature.

[0065] Optionally, the dry fan coil unit includes a brushless DC motor for driving the fan.

[0066] For example, a brushless DC motor is a DC motor that is driven by electronic commutation without a mechanical commutator. It mainly consists of a motor body (such as stator windings and permanent magnet rotor), an electronic controller (such as an inverter and drive chip), and a position sensor (such as a Hall sensor).

[0067] Understandably, compared to ordinary AC motor fan coil units, DC brushless motors have significantly lower operating noise (the operating noise of DC brushless motors is typically less than 25dB).

[0068] For example, the fan can be a fan built into the dry fan coil unit, used to drive airflow through the surface cooler of the multi-row tube structure included in the dry fan coil unit.

[0069] In this embodiment, the dry fan coil unit uses a DC brushless motor, which can improve the overall noise reduction performance of the system and meet the requirements of high-quiet scenarios such as bedrooms.

[0070] Figure 2 A schematic diagram of the structure of the combined refrigeration system provided in the embodiments of this application. Figure 2 .like Figure 2 As shown, the combined refrigeration system provided in this application embodiment further includes: a zone configuration module; the zone configuration module is used to dynamically adjust the ratio of radiative heat exchange corresponding to the capillary radiation system and air convection heat exchange corresponding to the dry fan coil unit according to the zone function.

[0071] For example, the partition configuration module may include, but is not limited to, a dynamic and static partition configuration module, a time period partition configuration module, and a scene partition configuration module.

[0072] For example, regional functions can be functional attributes that divide different spaces according to usage scenarios, personnel activity status, and core spatial needs. This application does not limit this; the specific function can be determined based on actual application requirements.

[0073] For example, the area functions may include static areas and dynamic areas.

[0074] For example, the cooling capacity output ratio of radiant heat transfer in the capillary radiation system to air convection heat transfer in the dry fan coil unit can be 60%:40%, 70%:30%, 40%:60%, etc. Specifically, the cooling capacity output ratio of radiant heat transfer in the capillary radiation system can be the ratio of the cooling capacity of radiant heat transfer in the capillary radiation system to the total cooling capacity of the system, and the cooling capacity output ratio of air convection heat transfer in the dry fan coil unit can be the ratio of the cooling capacity of air convection heat transfer in the dry fan coil unit to the total cooling capacity of the system.

[0075] For example, for static areas (such as bedrooms, studies, children's rooms, etc.), the zoning configuration module can dynamically adjust the cooling output ratio of the radiant heat exchange corresponding to the capillary radiant system and the air convection heat exchange corresponding to the dry fan coil unit. That is, it increases the radiant heat exchange cooling capacity of the capillary radiant system and / or decreases the air convection heat exchange cooling capacity of the dry fan coil unit. It can be understood that by increasing the radiant heat exchange cooling capacity of the capillary radiant system and / or decreasing the air convection heat exchange cooling capacity of the dry fan coil unit, uniform, low-noise cooling can be achieved through the radiant heat exchange of the capillary radiant system to match the low-noise cooling requirements of the static area.

[0076] For example, for dynamic areas (such as living rooms and kitchens), the zoning configuration module can dynamically adjust the cooling capacity output ratio between the radiant heat exchange corresponding to the capillary radiant system and the air convection heat exchange corresponding to the dry fan coil unit. That is, it can lower the radiant heat exchange cooling capacity of the capillary radiant system and / or increase the air convection heat exchange cooling capacity of the dry fan coil unit. It can be understood that by lowering the radiant heat exchange cooling capacity of the capillary radiant system and / or increasing the air convection heat exchange cooling capacity of the dry fan coil unit, rapid cooling can be achieved through the air convection heat exchange of the dry fan coil unit to match the dynamic load fluctuations of the dynamic area.

[0077] In this embodiment, the zone configuration module is configured to dynamically adjust the cooling capacity output ratio of the radiative heat exchange corresponding to the capillary radiation system and the air convection heat exchange corresponding to the dry fan coil unit according to the zone function, so as to flexibly adapt to the comfort needs of different functional zones and thus achieve personalized comfort adjustment.

[0078] Optionally, the combined cooling system provided in this application embodiment can also be used in conjunction with a fresh air system. In one possible implementation, the dry fan coil unit, capillary radiant system, and fresh air system can be combined and applied to different functional areas (such as living room, dining room, and bedroom) through the above-mentioned partition configuration module, so as to meet both the comfort requirements of cooling and humidity requirements.

[0079] For example, for functional areas requiring a high proportion of radiant heat transfer load and low noise (such as bedrooms), a combination of capillary radiant system and dehumidifying fresh air system can be used. In the capillary radiant system, the capillary network is set on the top surface and / or the ground of the area. This combination can meet high comfort requirements (such as high sleep quality requirements).

[0080] For example, for functional areas requiring a high proportion of air convection heat transfer load (such as living rooms with a large number of people), a combination of dry fan coil units, capillary radiant systems, and dehumidified fresh air systems can be used. In the capillary radiant system, the capillary network is set on the ceiling and / or floor of the area. This combination can meet the requirements for high comfort and eliminate the risk of stuffiness caused by a large number of people.

[0081] It should be noted that the combined refrigeration system provided in this application embodiment can also achieve heating by adjusting the water temperature of the refrigeration water provided by the refrigeration system. That is, any combination of the dry fan coil and capillary radiation system provided in this application embodiment for refrigeration or heating is within the protection scope of this application embodiment.

[0082] Based on the above embodiments, the following section uses the combined refrigeration system provided in the above embodiments as the execution subject, combined with... Figure 3 The specific implementation of the control method for the combined refrigeration system provided in the embodiments of this application will be described in detail.

[0083] Figure 3 This is a flowchart illustrating the control method for a combined refrigeration system provided in an embodiment of this application. Figure 3 As shown, the specific implementation of the control method for this combined refrigeration system may include the following steps:

[0084] S301, obtain the current environmental information of the target area and the current temperature of the cooling water in the combined refrigeration system.

[0085] For example, the target area can be an area with cooling needs, or an area that needs to meet high comfort requirements, etc.

[0086] For example, current environmental information includes, but is not limited to, current ambient temperature and current ambient humidity.

[0087] For example, current environmental information can be obtained in real time by temperature and humidity sensors set up in the target area.

[0088] For example, the temperature and humidity sensor can be a wall-mounted temperature and humidity sensor, a duct-type temperature and humidity sensor, or a ceiling-embedded temperature and humidity sensor, etc. This application does not limit it, and the specific type can be determined according to the actual application requirements.

[0089] For example, the current temperature of the cooling water can be obtained in real time by a water temperature sensor installed on the cooling water circulation pipe.

[0090] S302, Based on the current environmental information, determine the current environmental dew point temperature of the target area.

[0091] One possible implementation of this step is as follows: using the Magnus formula, calculate the saturated vapor pressure at the current ambient temperature; calculate the current actual vapor pressure based on the saturated vapor pressure and the current ambient humidity; and calculate the current ambient dew point temperature based on the current actual vapor pressure.

[0092] For example, the current actual vapor pressure can be expressed by the following formula:

[0093]

[0094] in, Indicates the current actual vapor pressure. RH represents the saturated vapor pressure, and RH represents the current ambient humidity.

[0095] It is understandable that the current ambient dew point temperature can be the temperature at which the current actual vapor pressure becomes the saturated vapor pressure.

[0096] One possible way to calculate the current ambient dew point temperature based on the current actual vapor pressure is to derive the Magnus formula in reverse, that is, to input the current actual vapor pressure as the saturated vapor pressure into the Magnus formula and calculate the current ambient dew point temperature.

[0097] S303 controls the cooling mode of the combined refrigeration system based on the current ambient dew point temperature and the current cooling water temperature.

[0098] For example, the cooling mode can be synergistic cooling of the dry fan coil unit and the capillary radiation system, or cooling of the dry fan coil unit alone.

[0099] Optionally, this step may include the following steps:

[0100] S3031, the temperature difference is obtained based on the current ambient dew point temperature and the current cooling water temperature.

[0101] It is understandable that the current temperature of the cooling water is higher than the current ambient dew point temperature.

[0102] In this step, the difference between the current cooling water temperature and the current ambient dew point temperature is defined as the temperature difference.

[0103] S3032, determine whether the temperature difference is greater than the preset temperature threshold.

[0104] For example, the preset temperature threshold can be 0.5℃, 1℃, etc. This application does not limit this; the specific threshold can be determined according to actual application requirements.

[0105] In this step, it is determined whether the temperature difference is greater than the preset temperature threshold. If the temperature difference is greater than the preset temperature threshold, step S3033 is executed; if the temperature difference is less than or equal to the preset temperature threshold, step S3034 is executed.

[0106] S3033 controls the cooling mode of the combined refrigeration system as a combination of capillary radiation system and dry fan coil cooling.

[0107] It is understandable that when the temperature difference between the current cooling water temperature and the current ambient dew point temperature is greater than the preset temperature threshold, it indicates that the temperature difference between the surface of the capillary network in the capillary radiation system and the temperature of the cooling water flowing in the capillary is large, which will not lead to the risk of condensation. Therefore, it is not necessary to shut down the capillary radiation system. That is, the cooling mode of the combined refrigeration system is controlled as the combined cooling mode of the capillary radiation system and the dry fan coil unit.

[0108] S3034 controls the cooling mode of the combined refrigeration system to be dry fan coil cooling.

[0109] It is understandable that when the temperature difference between the current cooling water temperature and the current ambient dew point temperature is less than or equal to the preset temperature threshold, it indicates that the temperature difference between the surface of the capillary network in the capillary radiation system and the temperature of the cooling water flowing in the capillary is relatively large, and there is a risk of condensation. Therefore, the capillary radiation system is shut down to avoid the risk of condensation, that is, the cooling mode of the combined refrigeration system is controlled to be dry fan coil cooperative cooling.

[0110] This embodiment of the application obtains the current environmental information of the target area and the current cooling water temperature in the combined refrigeration system. Based on the current environmental information, it determines the current environmental dew point temperature of the target area. Furthermore, based on the current environmental dew point temperature and the current cooling water temperature, it controls the cooling mode of the combined refrigeration system to improve cooling capacity and meet the high-efficiency cooling requirements in large-space scenarios. Simultaneously, it avoids the risk of condensation.

[0111] It is understood that the control method of the combined refrigeration system provided in this application embodiment can adopt a household control system configuration mode of "mainly controlling the dew point temperature in each room and supplementing with centralized display of comfort data", which reduces the difficulty of professional operation for homeowners and greatly improves the stability of the household radiant air conditioning five constant system.

[0112] Optionally, the control method of the combined refrigeration system provided in this application embodiment further includes: dynamically adjusting the ratio of radiative heat exchange corresponding to the capillary radiation system and air convection heat exchange corresponding to the dry fan coil unit according to the regional function.

[0113] The specific implementation of this embodiment is similar to that of the partition configuration module in the combined refrigeration system described above, and will not be repeated here.

[0114] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described method.

[0115] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the above-described method.

[0116] The aforementioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0117] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in the device.

[0118] The division of units is merely a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0119] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0120] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0121] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0122] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0123] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A combined refrigeration system, characterized in that, include: A refrigeration system, and a dry fan coil unit and a capillary radiation system respectively connected to the refrigeration system; The dry fan coil unit is used for cooling through air convection heat exchange; The capillary radiation system is used for cooling through radiative heat exchange; The refrigeration system is used to simultaneously provide cooling water to the dry fan coil unit and the capillary radiation system, wherein the temperature of the cooling water is higher than the ambient dew point temperature.

2. The combined refrigeration system according to claim 1, characterized in that, Neither the dry fan coil unit nor the capillary radiation system produces condensation on their surfaces during operation.

3. The combined refrigeration system according to claim 1 or 2, characterized in that, The dry fan coil unit includes a surface cooler with at least three rows of tubes.

4. The combined refrigeration system according to claim 3, characterized in that, The surface cooler uses a nano-coating or phase change material.

5. The combined refrigeration system according to any one of claims 1 or 2, characterized in that, The dry fan coil unit includes a brushless DC motor, which is used to drive the fan.

6. The combined refrigeration system according to claim 1 or 2, characterized in that, Also includes: Partition configuration module; The partition configuration module is used to dynamically adjust the ratio of cooling capacity output between the radiative heat exchange corresponding to the capillary radiation system and the air convection heat exchange corresponding to the dry fan coil unit according to the regional function.

7. A control method for a combined refrigeration system, characterized in that, The control method, applied to a combined refrigeration system as described in any one of claims 1 to 6, comprises: Obtain the current environmental information of the target area and the current temperature of the cooling water in the combined refrigeration system; Based on the current environmental information, determine the current environmental dew point temperature of the target area; The cooling mode of the combined refrigeration system is controlled based on the current ambient dew point temperature and the current cooling water temperature.

8. The control method for the combined refrigeration system according to claim 7, characterized in that, The step of controlling the cooling mode of the combined refrigeration system based on the current ambient dew point temperature and the current cooling water temperature includes: The temperature difference is obtained based on the current ambient dew point temperature and the current cooling water temperature; Determine whether the temperature difference is greater than a preset temperature threshold; If the temperature difference is greater than the preset temperature threshold, the cooling mode of the combined refrigeration system is controlled to be a combined cooling mode of capillary radiation system and dry fan coil unit. If the temperature difference is less than or equal to the preset temperature threshold, then the cooling mode of the combined refrigeration system is controlled to be dry fan coil cooling.

9. The control method for the combined refrigeration system according to claim 7 or 8, characterized in that, Also includes: The cooling capacity output ratio of the capillary radiation system corresponding to radiative heat exchange and the dry fan coil unit corresponding to air convection heat exchange is dynamically adjusted according to the regional function.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the control method of the combined refrigeration system as described in any one of claims 7 to 9.

11. A computer program product, characterized in that, include: A computer program, which, when executed by a processor, implements the control method for the combined refrigeration system as described in any one of claims 7 to 9.

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