Heating control method, air conditioning system, air conditioning equipment and ship

Abstract

The invention provides a heating control method, an air conditioning system, air conditioning equipment and a ship. The air conditioning system integrates a water cooling cabinet and a water heater at the same time, under the condition that the water storage tank has the heating requirement, a water outlet of the condensation heat exchanger can be controlled to be communicated with a water inlet of the first heat exchange flow path, a water outlet of the first heat exchange flow path is controlled to be communicated with a circulating water outlet, and the circulating water pump is controlled to be in the running state; and the heat recovery heat exchanger can heat water in the water storage tank by utilizing hot water discharged by the condensation heat exchanger, so that waste heat is recycled. Moreover, different heating strategies can be adopted for the air conditioning system according to different heating modes. Through the integration of the water-cooling cabinet and the water heater and the design of the heating control method, the occupied space can be reduced, the complexity of the system can be reduced, waste heat of the water-cooling cabinet is reasonably utilized, resource and energy waste is reduced, and the use experience can be well improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of air conditioning, and in particular to a heating control method, an air conditioning system, an air conditioning device and a ship. BACKGROUND

[0002] In ship applications, air conditioning systems are used to regulate the temperature of equipment rooms to ensure the normal operation of the equipment. At the same time, stable hot water supply is also needed in the daily life of the crew on the ship. At present, the air conditioning system and the hot water supply system on the ship are usually provided with two sets of independent equipment, generally a water-cooled cabinet machine and a water heater, which are respectively used for refrigeration and hot water production. There is a lack of an integrated device that can simultaneously meet the demand for indoor cooling and hot water supply, resulting in resource and energy waste, large space occupation, high system complexity and poor user experience. Moreover, the working principle of the water-cooled cabinet machine is to realize refrigeration of the equipment room through a compressor, an evaporator and a condenser heat exchanger. The heat generated by the condenser heat exchanger during the refrigeration process is directly discharged into seawater, causing energy waste. SUMMARY

[0003] In view of this, in order to solve the technical problems of resource and energy waste, large space occupation, high system complexity and poor user experience caused by the relative independence of the refrigeration equipment and the heating equipment on the ship in the prior art, the present disclosure provides a heating control method, an air conditioning system, an air conditioning device and a ship.

[0004] According to a first aspect of an embodiment of the present disclosure, a heating control method is provided, which is applied to an air conditioning system. The air conditioning system includes a water-cooled cabinet machine and a water heater. The water-cooled cabinet machine includes a compressor, a condenser heat exchanger, a circulating water inlet and a circulating water outlet. The water inlet of the condenser heat exchanger is in communication with the circulating water inlet of the water-cooled cabinet machine through a water inlet control valve. The water heater includes a heat recovery heat exchanger and a storage water tank. The heat recovery heat exchanger includes a first heat exchange flow path and a second heat exchange flow path. The second heat exchange flow path is in communication with the storage water tank to form a heating circulation flow path. The heating circulation flow path includes a circulating water pump. The heating control method includes:

[0005] In the case that the storage water tank has a heating demand, the water outlet of the condenser heat exchanger is controlled to be in communication with the water inlet of the first heat exchange flow path, the water outlet of the first heat exchange flow path is controlled to be in communication with the circulating water outlet, the circulating water pump is controlled to be in an operating state, and the heating strategy of the air conditioning system is controlled according to a heating mode;

[0006] The heating strategy of the air conditioning system according to the heating mode includes:

[0007] in the heating mode is the normal heating mode, the rotating speed of the circulating water pump is controlled at the maximum allowed rotating speed, and the opening degree of the water inlet control valve and the operating frequency of the compressor are controlled according to the first outlet water temperature of the condensing heat exchanger; and / or,

[0008] in the heating mode is the fast heating mode, the rotating speed of the circulating water pump, the opening degree of the water inlet control valve and the operating frequency of the compressor are controlled according to the second outlet water temperature of the second heat exchange flow path.

[0009] In an alternative embodiment, the controlling the opening degree of the water inlet control valve and the operating frequency of the compressor according to the first outlet water temperature of the condensing heat exchanger comprises:

[0010] In the case of T 出水1 <T 设 +1℃, the opening degree of the water inlet control valve is gradually reduced until the opening degree of the water inlet control valve reaches a set minimum opening degree, or until T 出水1 ≥T 设 +1℃; wherein T 出水1 is the first outlet water temperature, and T 设 is the set temperature of the water heater.

[0011] In an alternative embodiment, the controlling the rotating speed of the circulating water pump, the opening degree of the water inlet control valve and the operating frequency of the compressor according to the first outlet water temperature of the condensing heat exchanger comprises:

[0012] In the case of T 出水1 <T 设 +1℃, if the opening degree of the water inlet control valve is at the set minimum opening degree, the operating frequency of the compressor is gradually increased until the operating frequency of the compressor reaches a set maximum frequency, or until T 出水1 ≥T 设 +1℃.

[0013] In an alternative embodiment, the controlling the rotating speed of the circulating water pump, the opening degree of the water inlet control valve and the operating frequency of the compressor according to the first outlet water temperature of the condensing heat exchanger comprises:

[0014] In the case of T 出水1 ≥T 设 +1℃, the opening degree of the water inlet control valve is controlled to remain unchanged, and the operating frequency of the compressor is controlled to remain unchanged; wherein T 出水1 is the first outlet water temperature, and T 设 is the set temperature of the water heater.

[0015] In an alternative embodiment, the controlling the rotating speed of the circulating water pump, the opening of the water inlet control valve and the operating frequency of the compressor according to the second outlet water temperature of the second heat exchange flow path comprises:

[0016] In the case of T 出水2 <T 设 +3℃, the opening of the water inlet control valve is gradually reduced until the opening of the water inlet control valve reaches a set minimum opening, or until T 出水2 ≥T 设 +3℃; wherein T 出水2 is the second outlet water temperature, and T 设 is a set temperature of the water heater.

[0017] In an alternative embodiment, the controlling the rotating speed of the circulating water pump, the opening of the water inlet control valve and the operating frequency of the compressor according to the second outlet water temperature of the second heat exchange flow path comprises:

[0018] In the case of T 出水2 <T 设 +3℃, if the opening of the water inlet control valve is at the set minimum opening, the rotating speed of the circulating water pump is gradually reduced until the rotating speed of the circulating water pump reaches a set minimum rotating speed, or until T 出水2 ≥T 设 +3℃.

[0019] In an alternative embodiment, the controlling the rotating speed of the circulating water pump, the opening of the water inlet control valve and the operating frequency of the compressor according to the second outlet water temperature of the second heat exchange flow path comprises:

[0020] In the case of T 出水2 <T 设 +3℃, if the opening of the water inlet control valve is at the set minimum opening and the rotating speed of the circulating water pump is at the set minimum rotating speed, the operating frequency of the compressor is gradually increased until the operating frequency of the compressor reaches a set maximum frequency, or until T 出水2 ≥T 设 +3℃.

[0021] In an alternative embodiment, the controlling the rotating speed of the circulating water pump, the opening of the water inlet control valve and the operating frequency of the compressor according to the second outlet water temperature of the second heat exchange flow path comprises:

[0022] In the case of T 出水2 ≥T 设the rotational speed of the circulating water pump, the opening degree of the water inlet control valve and the operation frequency of the compressor remain unchanged; wherein T 出水2 is the second water outlet temperature, T 设 is the set temperature of the water heater.

[0023] In an alternative embodiment, the heating control method comprises:

[0024] In the case that the water storage tank does not have a heating demand, the water outlet of the condenser heat exchanger is controlled to communicate with the circulating water outlet, the circulating water pump is controlled to be in a standby state, and the opening degree of the water inlet control valve is controlled to reach a set maximum opening degree.

[0025] In an alternative embodiment, the control method comprises:

[0026] In the case that the water storage tank does not have a heating demand, if it is determined that T 水箱 ≤ T 设 -3℃, it is determined that the water storage tank has a heating demand; and / or,

[0027] In the case that the water storage tank has a heating demand, if it is determined that T 水箱 ≥ T 设 +1℃, it is determined that the water storage tank no longer has a heating demand.

[0028] wherein T 水箱 is the water temperature of the water storage tank.

[0029] According to a second aspect of the embodiments of the present disclosure, an air conditioning system is provided for implementing the heating control method according to any one of the first aspect, the air conditioning system comprising a water-cooled cabinet machine and a water heater, the water-cooled cabinet machine comprising a compressor, a condenser heat exchanger, a circulating water inlet and a circulating water outlet, the water inlet of the condenser heat exchanger communicating with the circulating water inlet of the water-cooled cabinet machine through a water inlet control valve, the water heater comprising a heat recovery heat exchanger and a water storage tank, the heat recovery heat exchanger comprising a first heat exchange flow path and a second heat exchange flow path, the second heat exchange flow path communicating with the water storage tank to form a heating circulation flow path, the heating circulation flow path comprising a circulating water pump.

[0030] In an alternative embodiment, the air conditioning system comprises a first three-way valve and a second three-way valve, the first valve port of the first three-way valve communicating with the water outlet of the condenser heat exchanger, the second valve port of the first three-way valve communicating with the water inlet of the first heat exchange flow path, the third valve port of the first three-way valve communicating with the first valve port of the second three-way valve, the second valve port of the second three-way valve communicating with the circulating water outlet, and the third valve port of the second three-way valve communicating with the water outlet of the first heat exchange flow path.

[0031] According to a third aspect of embodiments of the present disclosure, there is provided an air conditioning device comprising the air conditioning system according to the second aspect.

[0032] According to a fourth aspect of embodiments of the present disclosure, there is provided a ship comprising the air conditioning device according to the third aspect.

[0033] The technical solutions provided by the embodiments of the present disclosure can include the following beneficial effects: In the present disclosure, the air conditioning system integrates a water-cooled cabinet and a water heater, thereby reducing space occupation and allowing more rational use of the installation space of the air conditioning system. In the air conditioning system, when the water storage tank has a heating requirement, the water outlet of the condensing heat exchanger is controlled to communicate with the water inlet of the first heat exchange flow path, and the water outlet of the first heat exchange flow path is controlled to communicate with the circulating water outlet, so that the hot water discharged by the condensing heat exchanger can flow through the first heat exchange flow path and then be discharged to the outside of the air conditioning system through the circulating water outlet. At the same time, the circulating water pump is controlled to be in an operating state, so that the water in the water storage tank can be continuously circulated between the second heat exchange flow path and the water storage tank. In this case, the heat recovery heat exchanger can use the hot water discharged by the condensing heat exchanger to heat the water in the water storage tank, thereby achieving reuse of waste heat. In addition, in the present disclosure, different heating strategies can be adopted for the air conditioning system according to different heating modes. For example, in a conventional heating mode, the rotational speed of the circulating water pump can be controlled to be at a maximum allowable rotational speed, and the opening degree of the water inlet control valve and the operating frequency of the compressor can be controlled according to the first water outlet temperature of the condensing heat exchanger, so that the waste heat of the condensing heat exchanger can be reasonably used to perform conventional heating on the water in the water storage tank. For another example, in a rapid heating mode, the rotational speed of the circulating water pump, the opening degree of the water inlet control valve, and the operating frequency of the compressor can be controlled according to the second water storage temperature of the second heat exchange flow path, so that the waste heat of the condensing heat exchanger can be used to rapidly heat the water in the water storage tank, thereby better meeting the rapid heating requirement. That is, through the integration of the water-cooled cabinet and the water heater and the design of the heating control method, the present disclosure can not only reduce space occupation, but also reduce the complexity of the system, reasonably use the waste heat of the water-cooled cabinet, reduce resource and energy waste, and improve the use experience.

[0034] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and are not limiting to the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0035] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present disclosure and serve to explain the principles of the present disclosure.

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without any creative effort.

[0037] One or more embodiments are illustrated by way of example with reference to the drawings, which are not limiting of the embodiments and which do not constitute an entire description of all contemplated embodiments. Same reference numbers in different drawings represent the same or similar elements.

[0038] Figure 1 is a flow path schematic diagram of an air conditioning system according to an exemplary embodiment.

[0039] Figure 2 is a partial flow path schematic diagram of an air conditioning system according to an exemplary embodiment.

[0040] Figure 3 is a flow path schematic diagram of a water-cooled cabinet machine according to an exemplary embodiment.

[0041] Figure 4 is a flow path schematic diagram of a water heater according to an exemplary embodiment.

[0042] wherein:

[0043] 1. water-cooled cabinet machine; 11. condensing heat exchanger; 12. compressor; 13. first water outlet temperature sensing bulb; 14. water inlet control valve; 15. throttling valve; 16. evaporator; 17. first filter; 18. fan; 19. motor; 110. vapor-liquid separator;

[0044] 2. water heater; 21. water storage tank; 22. heat recovery heat exchanger; 23. circulating water pump; 24. water tank temperature sensing bulb; 25. second water outlet temperature sensing bulb; 26. second filter;

[0045] 3. control device; 4. first three-way valve; 5. second three-way valve. DETAILED DESCRIPTION

[0046] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort belong to the protection scope of the present application.

[0047] The following disclosure provides many different embodiments, or examples, for implementing different aspects of the application. Throughout this document, specific details of certain embodiments are described. However, it will be apparent to those skilled in the art that the application can be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form, rather than in detail, in order to avoid obscuring the purpose and advantages of the application. Likewise, only the preferred embodiment of the application is described herein, but it will be understood that the application can be practiced in other embodiments that are now known or become known. In addition, throughout this document, the use of "or" as a conjunction is meant to include a comprehensive interpretation of "one, but not the other" as well as "one, and not the other" and "one, but not the other, who can be included in the conjunctive phrase, such as "at least one of A and B" and "one of A and B."

[0048] For ease of description, spatial relative terms can be used herein to describe the relative position relationship or movement condition of one element or feature with respect to another element or feature as shown in the drawings, such as "internal", "external", "inner side", "outer side", "under", "below", "upper", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the drawings. For example, if the device in the drawings is turned over or the posture is changed or the movement state is changed, the directional indications will also change accordingly, for example: the element described as "under" or "below" other elements or features will be oriented as "above" or "over" other elements or features. Therefore, the example term "below" can include both upward and downward positions. The device can be additionally oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein are interpreted accordingly.

[0049] It should be noted that the drawings provided in the following embodiments only schematically illustrate the basic concept of the present application, and only the components related to the present application are shown in the drawings, not the number, shape and size of the components when actually implemented. The actual implementation of each component can be arbitrarily changed in type, number and proportion, and the layout type of the components can also be more complex.

[0050] The embodiments of the present application will be described below with reference to the drawings and preferred embodiments, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in the present specification. The present application can also be implemented or applied by means of other different specific embodiments, and the details in the specification can be modified or changed based on different views and applications without departing from the spirit of the present application. It should be understood that the preferred embodiments are only for illustration of the present application, and are not intended to limit the protection scope of the present application.

[0051] In order to solve the technical problems of resource and energy waste, large space occupation, high system complexity and poor use experience caused by the relative independence of the refrigeration and heating equipment on the ship in the prior art, the present disclosure provides a heating control method, an air conditioning system, an air conditioning equipment and a ship.

[0052] In the present disclosure, the air conditioning system integrates the water-cooled cabinet machine and the water heater, thereby reducing the space occupation and allowing more reasonable use of the installation space of the air conditioning system. In the air conditioning system, when the water storage tank has a heating requirement, the water outlet of the condensing heat exchanger is controlled to communicate with the water inlet of the first heat exchange flow path, and the water outlet of the first heat exchange flow path is controlled to communicate with the circulating water outlet, so that the hot water discharged by the condensing heat exchanger can flow through the first heat exchange flow path and then be discharged to the outside of the air conditioning system through the circulating water outlet. At the same time, the circulating water pump is controlled to be in an operating state, so that the water in the water storage tank can be continuously circulated between the second heat exchange flow path and the water storage tank. In this case, the heat recovery heat exchanger can use the hot water discharged by the condensing heat exchanger to heat the water in the water storage tank, thereby realizing the reuse of waste heat. In addition, in the present disclosure, different heating strategies can be adopted for the air conditioning system according to different heating modes. For example, in the conventional heating mode, the rotating speed of the circulating water pump can be controlled to be at the maximum allowable rotating speed, and the opening degree of the water inlet control valve and the operating frequency of the compressor can be controlled according to the first water outlet temperature of the condensing heat exchanger, so as to reasonably use the waste heat of the condensing heat exchanger to perform conventional heating on the water in the water storage tank. For another example, in the rapid heating mode, the rotating speed of the circulating water pump, the opening degree of the water inlet control valve and the operating frequency of the compressor can be controlled according to the second water storage temperature of the second heat exchange flow path, so as to use the waste heat of the condensing heat exchanger to rapidly heat the water in the water storage tank, thereby better meeting the rapid heating requirement. That is, through the integration of the water-cooled cabinet machine and the water heater and the design of the heating control method, the present disclosure can not only reduce the space occupation, but also reduce the complexity of the system, reasonably use the waste heat of the water-cooled cabinet machine, reduce the waste of resources and energy, and improve the use experience.

[0053] In one example embodiment, referring to Figures 1 to 4 Fig. 1 shows an air conditioning system and a heating control method. The air conditioning system is used to implement the above-mentioned heating control method, that is, the heating control method is applied to the above-mentioned air conditioning system. In addition, the embodiment also provides an air conditioning device provided with the above-mentioned air conditioning system.

[0054] It should be noted that in the related art ship air conditioning and hot water supply system, the independent refrigeration and heating device leads to low energy utilization rate and high space occupation rate. The condensation heat generated by the water-cooled cabinet machine 1 in the refrigeration process is directly discharged to the sea water, and the waste heat is not recycled, causing energy waste. At the same time, the existing waste heat recovery scheme is limited by seasons, and the condensation heat cannot be effectively utilized in summer, resulting in that the hot water supply needs to rely on additional heating devices, increasing the energy consumption and the equipment complexity.

[0055] For example, in the temperature regulation scenario of the ship equipment room, the water-cooled cabinet machine 1 drives the refrigeration cycle through the compressor 12, and the heat generated by the condenser heat exchanger 11 is discharged to seawater through circulating water. At this time, if the water storage tank 21 needs to be heated, the independent water heater 2 needs to be started for electric heating or oil heating. Since the two systems operate independently, the condensation heat is not recovered, resulting in repeated energy consumption in the process of cooling the equipment room and preparing hot water. In the summer high-temperature working condition, the condensation heat discharge increases significantly, but the water heater 2 still needs to consume additional energy for heating, and the overall energy efficiency of the system is reduced.

[0056] If the above problems are not solved, the energy consumption of the ship will continue to be high. In addition, the redundant structure of the two independent systems will also cause the space utilization rate of the equipment room to decrease, affecting the layout of the ship. The direct discharge of waste heat from the condenser heat exchanger 11 will also aggravate the thermal pollution of seawater and destroy the local marine ecological environment. In addition, the season-dependent waste heat recovery scheme cannot meet the stable heating demand throughout the year, resulting in a decrease in hot water supply reliability, affecting the quality of life on the ship, and the use experience is poor.

[0057] Based on this, in this embodiment, the water-cooled cabinet machine 1 and the water heater 2 are integrated into a unified system, that is, the air conditioning system of this embodiment can include a water-cooled cabinet machine 1 and a water heater 2, the water-cooled cabinet machine 1 includes a compressor 12, a condenser heat exchanger 11, a circulating water inlet and a circulating water outlet, and the water inlet of the condenser heat exchanger 11 is communicated with the circulating water inlet of the water-cooled cabinet machine 1 through a water inlet control valve 14. For example, the water inlet control valve 14 can be a proportional regulating valve or an electric ball valve driven by a stepping motor 19.

[0058] Among them, the water heater 2 includes a heat recovery heat exchanger 22 and a water storage tank 21, the heat recovery heat exchanger 22 includes a first heat exchange flow path and a second heat exchange flow path, for example, the heat recovery heat exchanger 22 can be a plate heat exchanger, or a shell and tube heat exchanger, which is not limited. The second heat exchange flow path is communicated with the water storage tank 21 to form a heating circulation flow path, and the heating circulation flow path includes a circulating water pump 23 for driving the water in the heating circulation flow path to circulate.

[0059] Among them, in the case that the water storage tank 21 has a heating demand, the control device 3 of the air conditioning system can control the water outlet of the condenser heat exchanger 11 to be communicated with the water inlet of the first heat exchange flow path, and control the water outlet of the first heat exchange flow path to be communicated with the circulating water outlet, so that the hot water discharged by the condenser heat exchanger 11 can flow through the first heat exchange flow path and then be discharged to the outside of the air conditioning system through the circulating water outlet.

[0060] Meanwhile, the circulating water pump 23 is controlled to be in an operating state, so that the water in the water storage tank 21 can be continuously circulated between the second heat exchange flow path and the water storage tank 21. In this case, the heat recovery heat exchanger 22 can use the hot water discharged by the condensing heat exchanger 11 to heat the water in the water storage tank 21, so as to realize the reuse of waste heat.

[0061] In addition, the embodiment can adopt different heating strategies for the air conditioning system according to different heating modes. For example, in the conventional heating mode, the rotating speed of the circulating water pump 23 can be controlled to be at the maximum allowable rotating speed, and the opening degree of the water inlet control valve 14 and the operating frequency of the compressor 12 can be controlled according to the first outlet water temperature of the condensing heat exchanger 11, so as to reasonably use the waste heat of the condensing heat exchanger 11 to heat the water in the water storage tank 21. For another example, in the rapid heating mode, the rotating speed of the circulating water pump 23, the opening degree of the water inlet control valve 14 and the operating frequency of the compressor 12 can be controlled according to the second water storage temperature of the second heat exchange flow path, so as to use the waste heat of the condensing heat exchanger 11 to rapidly heat the water in the water storage tank 21, so as to better meet the rapid heating demand.

[0062] That is, the embodiment can not only reduce the space occupation, but also reduce the complexity of the system, reasonably use the waste heat of the water-cooled cabinet 1, reduce the waste of resources and energy, and improve the use experience by the integration of the water-cooled cabinet 1 and the water heater 2 and the design of the heating control method.

[0063] The embodiment can realize efficient recovery and on-demand distribution of the waste heat of the condensing heat exchanger 11 in the ship scene by the dual-mode heating control strategy and the integrated design of the water-cooled cabinet 1 and the water heater 2. The design of the two heating modes enables the system to adapt to the heat demand under different working conditions, improves the flexibility and adaptability of the system, enhances the seasonal adaptability of the system, and can flexibly adjust the heating strategy according to different working conditions to meet the stable heating demand throughout the year. The integrated air conditioning equipment can also reduce the number of parts, reduce the space occupation of the overall equipment, simplify the system complexity, and improve the use experience. At the same time, through the waste heat recovery and utilization, the energy utilization efficiency can be improved, the operation cost can be reduced, and the thermal pollution to the marine environment can be reduced.

[0064] In one example embodiment, reference is made to Figures 1 to 4As shown, an air conditioning device, an air conditioning system of the air conditioning device and a heating control method applied to the air conditioning system are provided. In the embodiment, in the case that the heating mode is the conventional heating mode, in addition to controlling the rotating speed of the circulating water pump 23 to be the maximum allowed rotating speed, the opening degree of the water inlet control valve 14 and the operating frequency of the compressor 12 can be controlled according to the first outlet water temperature of the condenser heat exchanger 11. The first outlet water temperature can be detected by the first outlet water temperature sensing bulb 13 located on the outlet water pipeline of the condenser heat exchanger 11.

[0065] wherein, in the case that T 出水1 <T 设 +1℃, if the opening degree of the water inlet control valve 14 is greater than the set minimum opening degree, the opening degree of the water inlet control valve 14 is gradually adjusted to be lower, and the size relationship between T 出水1 and T 设 +1℃ is constantly judged until the opening degree of the water inlet control valve 14 reaches the set minimum opening degree, or until T 出水1 ≥T 设 +1℃.

[0066] wherein, T 出水1 is the first outlet water temperature, and T 设 is the set temperature of the water heater 2. The set temperature can be set according to the requirement, and the specific value is not limited. For example, the set temperature range of the water heater 2 can be 35-55℃. In addition, it should be noted that the water-cooled cabinet machine 1 has a minimum water pressure requirement, and the set minimum opening degree in the embodiment refers to the opening degree of the water inlet control valve 14 corresponding to the minimum water pressure requirement.

[0067] wherein, the opening degree adjustment of the water inlet control valve 14 can adopt a gradually decreasing mode, and the adjustment amplitude is 5%-10% of the total stroke each time, so as to avoid system oscillation caused by sudden change of water flow.

[0068] wherein, in the case that T 出水1 <T 设 +1℃, if the opening degree of the water inlet control valve 14 has reached the set minimum opening degree, but the operating frequency of the compressor 12 is still lower than the set maximum frequency, the operating frequency of the compressor 12 can be gradually adjusted to be higher, and the size relationship between T 出水1 and T 设 +1℃ is constantly judged until the operating frequency of the compressor 12 reaches the set maximum frequency, or until T 出水1 ≥T 设 +1℃.

[0069] wherein, the frequency adjustment of the compressor 12 adopts a stepwise increasing strategy, and the amplitude of each increase can be 10%-15% of the rated frequency, so as to prevent overload trip.

[0070] wherein, in the case that T出水1 ≥T 设 At +1℃, the opening degree of the water inlet control valve 14 and the operating frequency of the compressor 12 can be kept constant to gradually heat the water in the water storage tank 21 until the water temperature in the water storage tank 21 reaches the required level.

[0071] In some embodiments, a first outlet water temperature sensor 13 may be installed on the outlet water pipe of the condenser heat exchanger 11 to detect the first outlet water temperature. When T is detected... 出水1 <T 设 At +1℃, control device 3 reduces the opening of inlet control valve 14 by 5% every 30 seconds, and continuously judges T. 出水1 With T 设 The temperature is adjusted according to the +1℃ range until the opening reaches the set minimum opening degree of 15%. If the temperature still does not meet the standard at this point, the operating frequency of compressor 12 is increased by 5Hz every 2 minutes, with an upper limit of 60Hz. When the first outlet water temperature reaches T... 设 At +1℃, control device 3 can lock the opening of the inlet control valve 14 and the operating frequency of compressor 12 to gradually heat the water in storage tank 21 under the current conditions. For example, when the set temperature is 55℃, the system stops adjusting when the outlet water temperature reaches 56℃. At this time, the opening of the inlet valve may be maintained at 20%, and the operating frequency of compressor 12 may be stable at 50Hz. This control logic optimizes energy consumption while ensuring heating efficiency by adjusting different equipment parameters in stages. It should be noted that during the above process, the circulating water pump 23 can be controlled to always operate at its maximum allowable speed.

[0072] This embodiment achieves precise control of the outlet water temperature of the condenser heat exchanger 11 through the aforementioned control logic. By adjusting the opening degree of the inlet control valve 14 and the operating frequency of the compressor 12, it can flexibly respond to different heat load demands, ensuring the heating efficiency of the water heater 2. Simultaneously, the circulating water pump 23 maintains its maximum allowable speed, ensuring rapid heat transfer and improving the overall heat exchange efficiency of the system. This tiered adjustment strategy satisfies hot water demand while avoiding energy waste, achieving a better balance between energy saving and comfort, and enhancing the user experience.

[0073] In one exemplary embodiment, reference Figures 1 to 4As shown, an air conditioning device, an air conditioning system of the air conditioning device and a heating control method applied to the air conditioning system are provided. In the embodiment, in the process of controlling the rotating speed of the circulating water pump 23, the opening degree of the water inlet control valve 14 and the operating frequency of the compressor 12 according to the second outlet water temperature of the second heat exchange flow path in the fast heating mode, the relationship between the second outlet water temperature and the set temperature can be determined first. The second outlet water temperature can be detected by the second outlet water temperature sensing bulb 25 on the outlet water pipeline of the second heat exchange flow path.

[0074] wherein, in the case of T 出水2 <T 设 + 3℃, if the opening degree of the water inlet control valve 14 is greater than the set minimum opening degree, the opening degree of the water inlet control valve 14 can be gradually reduced, and the size relationship between T 出水2 and T 设 + 3℃ is constantly determined, until the opening degree of the water inlet control valve 14 reaches the set minimum opening degree, or until T 出水2 ≥ T 设 + 3℃; wherein, T 出水2 is the second outlet water temperature, and T 设 is the set temperature of the water heater 2.

[0075] wherein, in the case of T 出水2 <T 设 + 3℃, if the opening degree of the water inlet control valve 14 is at the set minimum opening degree, but the rotating speed of the circulating water pump 23 is greater than the set minimum rotating speed, the rotating speed of the circulating water pump 23 can be gradually reduced, and the size relationship between T 出水2 and T 设 + 3℃ is constantly determined, until the rotating speed of the circulating water pump 23 reaches the set minimum rotating speed, or until T 出水2 ≥ T 设 + 3℃. The set minimum rotating speed can be set according to actual needs, and the specific value thereof is not limited. For example, the set minimum rotating speed can be 30%-40% of the rated rotating speed of the circulating water pump 23.

[0076] wherein, in the case of T 出水2 <T 设 + 3℃, if the opening degree of the water inlet control valve 14 is at the set minimum opening degree, and the rotating speed of the circulating water pump 23 is at the set minimum rotating speed, but the operating frequency of the compressor 12 is still lower than the set maximum frequency, the operating frequency of the compressor 12 can be gradually increased, and the size relationship between T 出水2 and T 设 + 3℃ is constantly determined, until the operating frequency of the compressor 12 reaches the set maximum frequency, or until T 出水2 ≥ T 设+ 3°C. The set maximum frequency can be set according to actual requirements, and the specific value thereof is not limited. For example, the set maximum frequency can be 90%-95% of the rated frequency of the compressor 12, so as to better protect the compressor 12.

[0077] wherein, in the case of T 出水2 ≥ T 设 + 3°C, the rotation speed of the circulating water pump 23, the opening degree of the water inlet control valve 14, and the operating frequency of the compressor 12 are controlled to remain unchanged, that is, the circulating water pump 23, the water inlet control valve 14, and the compressor 12 are controlled to maintain the current state, so as to gradually heat the water in the water storage tank 21 until the water temperature of the water storage tank 21 reaches the requirement.

[0078] In this embodiment, in the fast heating mode, the opening degree adjustment of the water inlet control valve 14 is prioritized over the rotation speed adjustment of the circulating water pump 23, and the rotation speed adjustment of the circulating water pump 23 is prioritized over the frequency adjustment of the compressor 12. When the second outlet water temperature does not reach the requirement, the outlet water temperature of the condensing heat exchanger 11 is first increased by reducing the opening degree of the water inlet control valve 14, so as to increase the heat transfer temperature difference of the heat recovery heat exchanger 22. If the temperature still does not reach the requirement, the circulation flow rate in the water storage tank 21 is reduced by reducing the rotation speed of the circulating water pump 23, so as to prolong the residence time of the water in the heat recovery heat exchanger 22 to increase the heat absorption amount. When the above adjustments all reach the limit value, the circulation amount of the refrigerant is increased by increasing the frequency of the compressor 12, so that the condensing heat exchanger 11 releases more heat.

[0079] For example, after the opening degree of the water inlet control valve 14 is reduced to 20% and the rotation speed of the circulating water pump 23 is reduced to 400 rpm, if the temperature is still lower than the set value, the frequency of the compressor 12 is gradually increased from 50 Hz to 55 Hz until the second outlet water temperature reaches Tset+ 3°C. Thus, a step control strategy is formed, which can ensure the heating speed while avoiding overloading of the equipment, and can realize energy efficiency optimization through parameter linkage control.

[0080] In this embodiment, the above technical solution can accurately control the heating strategy of the air conditioning system in the fast heating mode. By adjusting the rotation speed of the circulating water pump 23, the opening degree of the water inlet control valve 14, and the operating frequency of the compressor 12 according to the outlet water temperature of the second heat exchange flow path, the rapid increase and stable control of the hot water temperature can be realized in the fast heating mode. This embodiment can effectively improve the hot water heating efficiency, reduce energy waste, and ensure that the hot water temperature is stable within the set range, thereby improving user comfort. In addition, this embodiment can avoid frequent start-stop of the system by step adjustment of the parameters of each component, thereby prolonging the service life of the equipment and better improving the user experience.

[0081] In one example embodiment, with reference to Figures 1 to 4As shown, an air conditioning device, an air conditioning system of the air conditioning device, and a heating control method applied to the air conditioning system are provided. It should be noted that in the air conditioning system, if the water outlet path of the condenser heat exchanger 11 cannot be effectively adjusted and the state of the circulating water pump 23 cannot be controlled when there is no heating demand in the water storage tank 21, the system may continue to perform unnecessary heat recovery cycles, causing energy waste and equipment wear. In addition, if the water inlet control valve 14 is not at the maximum opening, the cooling water flow may be limited, affecting the refrigeration efficiency of the water-cooled cabinet 1.

[0082] Based on this, in this embodiment, when the water storage tank 21 does not have a heating demand, the water outlet of the condenser heat exchanger 11 is controlled to communicate with the circulating water outlet, the circulating water pump 23 is controlled to be in a standby state, and the opening of the water inlet control valve 14 is controlled to reach a set maximum opening.

[0083] The communication of the water outlet of the condenser heat exchanger 11 with the circulating water outlet can be achieved by switching a three-way valve or multiple two-way valves, which is not limited. The standby state of the circulating water pump 23 can be achieved by closing its power supply circuit to avoid idling energy consumption. The set maximum opening of the water inlet control valve 14 can be set to the fully open state to ensure maximum cooling water flow. The scheme of this embodiment can complement the control scheme in the heating mode in other embodiments, and realize seamless switching of the system between the refrigeration and heat recovery modes through waterway switching and component state linkage.

[0084] For example, assuming that the preset temperature of the water storage tank 21 is 60°C. When the water temperature in the tank reaches or exceeds 60°C, the system automatically switches to this mode. The water outlet of the condenser heat exchanger 11 is directly communicated to the circulating water outlet through a three-way valve, and hot water no longer enters the heat recovery heat exchanger 22. The circulating water pump 23 stops working and enters a standby state to save energy. The opening of the water inlet control valve 14 is adjusted to 100% to ensure that the condenser heat exchanger 11 obtains the maximum flow of cooling water and maintains the normal refrigeration function of the water-cooled cabinet 1.

[0085] In this embodiment, when there is no hot water demand, the system automatically adjusts the operating mode to avoid unnecessary heat recovery, improving energy utilization efficiency. At the same time, by controlling the opening of the water inlet control valve 14, the refrigeration performance of the water-cooled cabinet 1 is ensured not to be affected. In addition, the standby state of the circulating water pump 23 effectively reduces the energy consumption of the system. This scheme not only optimizes the system operation, but also prolongs the service life of the equipment, improves the reliability and economy of the overall system.

[0086] In addition, in this embodiment, whether the water storage tank 21 has a heating demand can be detected according to the tank temperature package 24 of the water storage tank 21, and then whether the water storage tank 21 has a heating demand is determined based on the detected water temperature and the set temperature.

[0087] wherein, in the case that the water tank 21 does not have a heating requirement, i.e. the waste heat of the condenser heat exchanger 11 is not used to heat the water tank 21, if it is determined that T 水箱 ≤ T 设 - 3℃, it is considered that the water temperature of the water tank 21 does not reach the requirement, and it is determined that the water tank 21 has a heating requirement. In the case that the water tank 21 has a heating requirement, i.e. the waste heat of the condenser heat exchanger 11 is used to heat the water tank 21, if it is determined that T 水箱 ≥ T 设 + 1℃, it is determined that the water temperature of the water tank 21 reaches the requirement, and it is determined that the water tank 21 no longer has a heating requirement.

[0088] wherein, the difference between the water temperature of the water tank 21 and the set temperature is quantified as two fixed thresholds of three degrees Celsius and one degree Celsius, which constitute a two-way hysteresis interval. When T 水箱 ≤ T 设 - 3℃, the heating requirement is triggered; when T 水箱 ≥ T 设 + 1℃, the heating requirement is released. This difference range can well balance the heating response speed and system stability, avoiding misoperation caused by temperature detection error or short-term fluctuations. In addition, the water tank temperature sensing bag 24 can be arranged in the region with the maximum thermal inertia inside the water tank, ensuring that the detection value reflects the overall water temperature state.

[0089] For example, when the water tank temperature sensing bag 24 detects that the temperature value is less than or equal to T 设 - 3℃ for five seconds, the control device 3 can determine that the heating process needs to be started, and at this time the water path switching of the condenser heat exchanger 11 and the heat recovery heat exchanger 22 is triggered. When the water temperature rises to greater than or equal to T 设 + 1℃ during the heating process, the system maintains the current state for ten seconds before closing the heating to prevent transient temperature overshoot. This hysteresis control strategy forms a buffer band by setting the upper and lower limits of the temperature, which can reduce the number of compressor 12 start-stop times compared to single threshold control, and also can cycle the running time of the water pump 23.

[0090] This embodiment can realize intelligent judgment and precise control of the heating requirement of the water tank 21. By setting reasonable temperature thresholds, the system can start heating in time when the water temperature is too low, ensuring that users can obtain hot water at any time; at the same time, the heating is stopped in time when the water temperature reaches the requirement, avoiding energy waste. This control method not only can improve the user experience, but also can optimize the energy utilization efficiency of the system. In addition, since the heating control is more accurate, the frequent start-stop of related equipment can be reduced, the service life of the equipment can be prolonged, and the user experience can be further improved.

[0091] In one exemplary embodiment, reference is made to Figures 1 to 4As shown, an air conditioning device, an air conditioning system of the air conditioning device, and a heating control method applied to the air conditioning system are provided. In this embodiment, the air conditioning system can include a first three-way valve 4 and a second three-way valve 5. The first valve port of the first three-way valve 4 is in communication with the water outlet of the condenser heat exchanger 11. The second valve port is in communication with the water inlet of the first heat exchange flow path. The third valve port is in communication with the first valve port of the second three-way valve 5. The second valve port of the second three-way valve 5 is in communication with the circulating water outlet. The third valve port is in communication with the water outlet of the first heat exchange flow path.

[0092] The three valve ports of the first three-way valve 4 form three optional paths of the condenser water flow. The three valve ports of the second three-way valve 5 form three return channels of the water flow after heat exchange. The two valves are connected to each other through the third valve port to form a bypass circuit.

[0093] For example, the first three-way valve 4 and the second three-way valve 5 are both electric three-way valves. The first valve port of the first three-way valve 4 is connected to the water outlet of the condenser heat exchanger 11 through a pipeline. The second valve port of the first three-way valve 4 is connected to the water inlet of the first heat exchange flow path of the heat recovery heat exchanger 22 through a pipeline. The third valve port of the first three-way valve 4 is connected to the first valve port of the second three-way valve 5 through a pipeline. The second valve port of the second three-way valve 5 is connected to the circulating water outlet of the water-cooled cabinet 1 through a pipeline. The third valve port of the second three-way valve 5 is connected to the water outlet of the first heat exchange flow path of the heat recovery heat exchanger 22 through a pipeline.

[0094] When the water storage tank 21 has a heating requirement, the control device 3 can control the first valve port and the second valve port of the first three-way valve 4 to be in communication, so as to guide the water discharged from the condenser to the first heat exchange flow path for heat exchange. At the same time, the control device 3 can control the second valve port and the third valve port of the second three-way valve 5 to be in communication. After the water flow that has completed heat exchange in the heat recovery heat exchanger 22 passes through the second valve port and the third valve port of the second three-way valve 5, it returns to the circulating water outlet, thereby forming a complete heat recovery circulation flow path.

[0095] When the water storage tank 21 does not have a heating requirement, the control device 3 can control the first valve port and the third valve port of the first three-way valve 4 to be in communication, and the first valve port and the third valve port of the second three-way valve 5 to be in communication, so as to make the water discharged from the condenser heat exchanger 11 directly pass through the circulating water outlet without passing through the first heat exchange flow path.

[0096] In this embodiment, the flexible switching between the water outlet of the condenser heat exchanger 11 and the heat recovery heat exchanger 22 can be realized by using two three-way valves. Thus, when the water storage tank 21 needs to be heated, the heat of the condenser heat exchanger 11 can be effectively recovered and utilized, thereby improving the energy utilization efficiency. When the water storage tank 21 does not need to be heated, the water outlet of the condenser heat exchanger 11 can directly return to the circulating water outlet, thereby avoiding unnecessary heat loss. In addition, by using the two three-way valves, the system structure can be simplified, the pipeline complexity can be reduced, and the installation and maintenance of the system are facilitated.

[0097] In one example embodiment, a ship is provided, which can include the air conditioning device in the above embodiments, with reference to Figures 1 to 4 As shown, the air conditioning device can include a water-cooled cabinet 1 and a water heater 2. The water-cooled cabinet 1 can include a compressor 12, a condenser heat exchanger 11, a circulating water inlet and a circulating water outlet, and the water inlet of the condenser heat exchanger 11 is communicated with the circulating water inlet of the water-cooled cabinet 1 through a water inlet control valve 14. The water heater 2 includes a heat recovery heat exchanger 22 and a storage water tank 21, the heat recovery heat exchanger 22 includes a first heat exchange flow path and a second heat exchange flow path, the second heat exchange flow path is communicated with the storage water tank 21 to form a heating circulating flow path, and the heating circulating flow path includes a circulating water pump 23. The air conditioning system further includes a first three-way valve 4 and a second three-way valve 5, the first valve port of the first three-way valve 4 is communicated with the water outlet of the condenser heat exchanger 11, the second valve port is communicated with the water inlet of the first heat exchange flow path, and the third valve port is communicated with the first valve port of the second three-way valve 5; the second valve port of the second three-way valve 5 is communicated with the circulating water outlet, and the third valve port is communicated with the water outlet of the first heat exchange flow path.

[0098] In this embodiment, the water-cooled cabinet 1 is mainly used for cooling the equipment room or indoor of the ship, and can further include a throttling valve 15, an evaporator 16 (such as a finned evaporator 16), a first filter 17, a fan 18, a motor 19, a vapor-liquid separator 110, a high-pressure sensor, a low-pressure sensor, a return air temperature sensing bag, a pipe temperature sensing bag, an exhaust temperature sensing bag, a high-pressure gauge, a low-pressure gauge, etc. The water heater 2 mainly recovers the heat of the condenser heat exchanger 11 in the water-cooled cabinet 1 to the storage water tank 21 through the heat recovery heat exchanger 22, and stores hot water in the storage water tank 21 for daily use. The water heater 2 can further include a second filter 26 arranged on the water inlet pipeline of the first heat exchange flow path. In addition, the water-cooled cabinet 1 and the water heater 2 can share a control device 3 to realize overall control of the entire air conditioning device.

[0099] In this embodiment, when the water-cooled cabinet 1 is cooling, after it is started and the setting of the set cooling temperature is completed, the ambient temperature can be stabilized at the set cooling temperature through the lift of the compressor 12 and the linkage of the throttling valve 15, the fan 18, the motor 19 and other devices, so as to meet the cooling demand.

[0100] When the water-cooled cabinet air conditioner 1 is in normal operation, high-temperature and high-pressure gaseous refrigerant discharged from the compressor 12 enters the condensing heat exchanger 11, and the high-temperature and high-pressure gaseous refrigerant exchanges heat with the circulating water in the condensing heat exchanger 11, so that the heat is transferred to the circulating water to heat it. In the water-cooled cabinet air conditioner 1, the outlet water temperature of the condensing heat exchanger 11 can be increased by adjusting the opening of the water inlet control valve 14 (for example, an electric ball valve). When other parameters remain unchanged, the smaller the opening of the water inlet control valve 14, the smaller the water flow in the condensing heat exchanger 11, so that the outlet water temperature of the condensing heat exchanger 11 is increased. When the water heater 2 has a heating demand, the heated circulating water flows into the heat recovery heat exchanger 22 of the water heater 2, exchanges heat with the cold water in the water storage tank 21 through the heat recovery heat exchanger 22, and then flows back to the water storage tank 21, so that the hot water is stored in the water storage tank 21. The water storage tank 21 can be a heat-insulated tank, and the water in the water storage tank 21 can be supplied to the heat recovery heat exchanger 22 through the circulating water pump 23, so that the water in the water storage tank 21 is circulated to exchange heat, so that the water temperature reaches the required temperature.

[0101] In this embodiment, the water-cooled cabinet air conditioner 1 and the water heater 2 are designed in a double-system cooperative optimization mode. The water-cooled cabinet air conditioner 1 cools the indoor ambient temperature, and the heat of the condensing heat exchanger 11 is recovered in the water heater 2, so that the energy consumption is reduced and the efficiency is improved. In addition, in this embodiment, the set temperature range of the water heater 2 can be 35-55℃, which can well meet the daily use demand, and when the highest water temperature is 55℃, the condensing temperature of the condensing heat exchanger 11 does not reach the high-pressure protection, so that the water heater 2 can meet the demand for supplying hot water throughout the year, and the environmental adaptability of the waste heat recovery air conditioner water heater 2 is improved.

[0102] It should be noted that the air conditioning equipment in the present disclosure can be arranged on a ship, and can also be arranged on other offshore equipment such as offshore platforms, and the present disclosure is not limited thereto.

[0103] Those skilled in the art should further realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware, computer software or a combination of both. In order to clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been described in the above description. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. The skilled person can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0104] It should be noted that the terms "one embodiment," "an embodiment," "certain embodiments," certain examples," "some embodiments," and the like, typically refer to one of only a number of particular embodiments or implementations, and that this application contains a number of examples with many different embodiments. The specific features, structures, or characteristics described in some embodiments are not necessarily the same as other embodiments. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure or characteristic is described in connection with an embodiment, it is submitted that it is within the purview of one of ordinary skill in the art to effect such feature, structure or characteristic in connection with other

[0105] It should be noted that, in the present document, relational terms such as "first" and "second", and the like, are used solely to distinguish one from another entity or action, without necessarily implying a required or an actual temporal order to such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article or apparatus. An element proceeded by "comprises a", "comprising", or "comprises" does not, without more constraints, foreclose the existence of additional identical elements other than the listed ones.

[0106] The above embodiments are only preferred examples of the present application, and the protection scope of the present application is not limited thereto. Any equivalent replacement or transformation of the present application made by those skilled in the art based on the present application shall fall within the protection scope of the present application.

Claims

1. A heating control method, characterized by, The heating control method is applied to an air conditioning system, the air conditioning system comprising a water-cooled cabinet and a water heater, the water-cooled cabinet comprising a compressor, a condensing heat exchanger, a circulating water inlet and a circulating water outlet, a water inlet of the condensing heat exchanger being communicated with the circulating water inlet of the water-cooled cabinet through a water inlet control valve, the water heater comprising a heat recovery heat exchanger and a storage water tank, the heat recovery heat exchanger comprising a first heat exchange flow path and a second heat exchange flow path, the second heat exchange flow path being communicated with the storage water tank to form a heating circulation flow path, the heating circulation flow path comprising a circulating water pump, the heating control method comprising: In the case that the storage water tank has a heating demand, the water outlet of the condensing heat exchanger is controlled to be communicated with the water inlet of the first heat exchange flow path, the water outlet of the first heat exchange flow path is controlled to be communicated with the circulating water outlet, the circulating water pump is controlled to be in an operating state, and the heating strategy of the air conditioning system is controlled according to a heating mode; Wherein, the heating strategy of the air conditioning system is controlled according to the heating mode, comprising: In the case that the heating mode is a conventional heating mode, the rotating speed of the circulating water pump is controlled to be at a maximum allowable rotating speed, the opening degree of the water inlet control valve and the operating frequency of the compressor are controlled according to the first water outlet temperature of the condensing heat exchanger; and / or, In the case that the heating mode is a rapid heating mode, the rotating speed of the circulating water pump, the opening degree of the water inlet control valve and the operating frequency of the compressor are controlled according to the second water outlet temperature of the second heat exchange flow path.

2. The heating control method of claim 1, wherein, The opening degree of the water inlet control valve and the operating frequency of the compressor are controlled according to the first water outlet temperature of the condensing heat exchanger, comprising: In the case of T 出水1 <T 设 +1℃, gradually reduce the opening of the water inlet control valve until the opening of the water inlet control valve reaches the set minimum opening, or until T 出水1 ≥T 设 +1℃; wherein T 出水1 is the first water outlet temperature, T 设 is the set temperature of the water heater.

3. The heating control method of claim 2, wherein, The rotating speed of the circulating water pump, the opening degree of the water inlet control valve and the operating frequency of the compressor are controlled according to the first water outlet temperature of the condensing heat exchanger, comprising: In the case where T 出水1 In the case where T 设 In the case where T 出水1 In the case where T 设 + 1℃.

4. The heating control method of claim 1, wherein, The rotating speed of the circulating water pump, the opening degree of the water inlet control valve and the operating frequency of the compressor are controlled according to the first water outlet temperature of the condensing heat exchanger, comprising: In T 出水1 ≥T 设 +1℃, the opening degree of the water inlet control valve is kept unchanged, and the operating frequency of the compressor is kept unchanged; wherein, T 出水1 is the first water outlet temperature, and T 设 is the set temperature of the water heater.

5. The heating control method of claim 1, wherein, The rotating speed of the circulating water pump, the opening degree of the water inlet control valve and the operating frequency of the compressor are controlled according to the second water outlet temperature of the second heat exchange flow path, comprising: In T 出水2 <T 设 + 3℃, gradually reduce the opening of the water inlet control valve until the opening of the water inlet control valve reaches the set minimum opening, or until T 出水2 ≥T 设 + 3℃; wherein T 出水2 is the second water outlet temperature, T 设 is the set temperature of the water heater.

6. The heating control method of claim 5, wherein, The rotating speed of the circulating water pump, the opening degree of the water inlet control valve and the operating frequency of the compressor are controlled according to the second water outlet temperature of the second heat exchange flow path, comprising: In T 出水2 <T 设 At +3℃, if the opening degree of the inlet control valve is at the set minimum opening degree, the speed of the circulating water pump is gradually reduced until the speed of the circulating water pump reaches the set minimum speed, or until T 出水2 ≥T 设 +3℃.

7. The heating control method of claim 6, wherein, The rotating speed of the circulating water pump, the opening degree of the water inlet control valve and the operating frequency of the compressor are controlled according to the second water outlet temperature of the second heat exchange flow path, comprising: In the case of T 出水2 In the case of T 设 In the case of T 出水2 In the case of T 设 + 3℃.

8. The heating control method of claim 1, wherein, The rotating speed of the circulating water pump, the opening degree of the water inlet control valve and the operating frequency of the compressor are controlled according to the second water outlet temperature of the second heat exchange flow path, comprising: In the case of T 出水2 ≥ T 设 + 3℃, the rotation speed of the circulating water pump, the opening of the water inlet control valve and the operation frequency of the compressor are kept unchanged; wherein T 出水2 is the second water outlet temperature, and T 设 is the set temperature of the water heater.

9. The heating control method according to any one of claims 1 to 8, wherein, The rotating speed of the circulating water pump, the opening degree of the water inlet control valve and the operating frequency of the compressor are controlled according to the second water outlet temperature of the second heat exchange flow path, comprising: The heating control method comprises:

10. The heating control method of claim 9, wherein, In the case that the storage water tank has no heating demand, the water outlet of the condensing heat exchanger is controlled to be communicated with the circulating water outlet, the circulating water pump is controlled to be in a standby state, and the opening degree of the water inlet control valve is controlled to reach a set maximum opening degree. The control method comprises: In case the water storage tank does not have a heating demand, it is determined that the water storage tank has a heating demand if it is determined that T 水箱 ≤ T 设 - 3 °C, and / or, In case the hot water storage tank has a heating demand, it is determined that the hot water storage tank no longer has a heating demand if T 水箱 ≥ T 设 + 1 °C. wherein T 水箱 is the water temperature of the water storage tank.

11. An air conditioning system, characterised in that, The air conditioning system is used to implement the heating control method as claimed in any one of claims 1-10, and the air conditioning system comprises a water-cooled cabinet and a water heater, the water-cooled cabinet comprises a compressor, a condensing heat exchanger, a circulating water inlet and a circulating water outlet, a water inlet of the condensing heat exchanger is communicated with the circulating water inlet of the water-cooled cabinet through a water inlet control valve, the water heater comprises a heat recovery heat exchanger and a storage water tank, the heat recovery heat exchanger comprises a first heat exchange flow path and a second heat exchange flow path, the second heat exchange flow path is communicated with the storage water tank to form a heating circulation flow path, and the heating circulation flow path comprises a circulating water pump.

12. The air conditioning system of claim 11, wherein, The air conditioning system comprises a first three-way valve and a second three-way valve, a first valve port of the first three-way valve is communicated with a water outlet of the condensing heat exchanger, a second valve port of the first three-way valve is communicated with a water inlet of the first heat exchange flow path, a third valve port of the first three-way valve is communicated with a first valve port of the second three-way valve, a second valve port of the second three-way valve is communicated with the circulating water outlet, and a third valve port of the second three-way valve is communicated with a water outlet of the first heat exchange flow path.

13. An air conditioning apparatus characterized by comprising: The air conditioning equipment comprises the air conditioning system as claimed in claim 11 or 12.

14. A vessel characterised in that, The ship comprises the air conditioning equipment as claimed in claim 13.

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