A marine combined cooling and heating heat pump system

Abstract

This application relates to a marine combined cooling and heating heat pump system. By using a three-way valve and a four-way valve, the three-way valve connects to a water-side heat exchanger, and the four-way valve connects to a seawater-side heat exchanger and an air-side heat exchanger. A first throttle valve group controls the connection between the water-side and seawater-side heat exchangers, and between the seawater-side and air-side heat exchangers. A second throttle valve group controls the connection between the water-side and air-side heat exchangers. A hot water pipe connected to the water tank of the water-side heat exchanger is installed inside the hull. This allows the system to flexibly switch and combine the operation of the water-side, seawater-side, and air-side heat exchangers according to different operating conditions. This enables multi-condition switching and efficient, stable operation within the hull, including single cooling, single heating, combined cooling and hot water supply, combined heating and hot water supply, and single hot water supply. Simultaneously, it fully utilizes the heat and cold of seawater, significantly improving energy efficiency, and is particularly suitable for marine applications with insufficient or unstable power supply.

Description

Technical Field

[0001] This utility model relates to the field of heat pump control technology, and in particular to a marine combined cooling and heating heat pump system. Background Technology

[0002] During ship operation, the cabin is usually a relatively enclosed space with limited air circulation. In addition, the continuous heat generated by various mechanical and electrical equipment makes it difficult to maintain the temperature and humidity within the cabin within a suitable range. This not only seriously affects the health and work comfort of the crew, but may also interfere with the normal operation of the precision instruments in the cabin and reduce the service life of the equipment. At the same time, the daily life of the crew on board requires a large amount of hot water, and there is an overlap between the demand for water and the demand for cooling and heating.

[0003] Currently, ships primarily use air conditioning for cooling and heating, and electric heating equipment for hot water supply, providing environmental heating and cooling control and domestic hot water to the cabins. This independent operation mode has significant drawbacks: the cooling, heating, and hot water supply processes are independent of each other, making it impossible to achieve comprehensive energy utilization, resulting in high energy consumption and increasing the ship's electrical load and operating costs. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a marine combined cooling and heating heat pump system.

[0005] A marine combined cooling and heating heat pump system includes: The compressor is equipped with an exhaust port and a return port; A three-way valve is provided with an inlet end, an outlet end and a working end, with the inlet end connected to the outlet port; The four-way valve is provided with a first valve port, a second valve port, a third valve port and a fourth valve port. The first valve port is connected to the working end and the fourth valve port is connected to the return air port. A water-side heat exchanger is used, with one end of its refrigerant flow path connected to the exhaust end, and its water flow path connected to a water tank, with a heating water pipe connected to the outside of the water tank. The seawater-side heat exchanger has one end of its refrigerant flow path connected to the second valve port; An air-side heat exchanger, one end of its refrigerant flow path is connected to a third valve port; The first throttling valve assembly includes a first throttling component. One end of the first throttling component is connected to the other end of the refrigerant flow path of the seawater-side heat exchanger. The other end of the first throttling component is connected to the other end of the refrigerant flow path of the water-side heat exchanger through a first solenoid valve. The other end of the first throttling component is connected to the other end of the refrigerant flow path of the air-side heat exchanger through a second solenoid valve. The second throttling valve assembly has one end connected to the other end of the refrigerant flow path of the water-side heat exchanger, and the other end connected to the other end of the refrigerant flow path of the air-side heat exchanger.

[0006] Furthermore, the outlet of the water tank is connected to the heating water pipe via a heating water pump.

[0007] Furthermore, the water inlet of the water tank is connected to the heating water pipe through a filter assembly.

[0008] Furthermore, the first throttling component includes a first throttling channel and a second throttling channel arranged in parallel.

[0009] Furthermore, the first throttling channel includes a capillary tube and a one-way valve connected in sequence. One end of the one-way valve is connected to the other end of the refrigerant flow path of the seawater-side heat exchanger, and one end of the capillary tube is connected to a first solenoid valve and a second solenoid valve, respectively.

[0010] Furthermore, the second throttling channel is a first electronic expansion valve, one end of which is connected to the other end of the refrigerant flow path of the seawater-side heat exchanger, and the other end of which is connected to a first solenoid valve and a second solenoid valve respectively.

[0011] Furthermore, the second throttling valve assembly includes a third solenoid valve and a second electronic expansion valve connected in sequence. The third solenoid valve is connected to the other end of the refrigerant flow path of the water-side heat exchanger, and the second electronic expansion valve is connected to the other end of the refrigerant flow path of the air-side heat exchanger.

[0012] Furthermore, it also includes a liquid storage tank, the refrigerant inlet of which is connected to the other end of the refrigerant flow path of the water-side heat exchanger, and the refrigerant outlet of which is connected to the first throttling valve group and the second throttling valve group respectively.

[0013] Furthermore, a fan is also provided on one side of the air-side heat exchanger.

[0014] Compared to existing technologies, this invention combines a three-way valve with a four-way valve, connecting the three-way valve to the water-side heat exchanger and the four-way valve to the seawater-side heat exchanger and the air-side heat exchanger. A first throttle valve group controls the connection between the water-side and seawater-side heat exchangers, and between the seawater-side and air-side heat exchangers; a second throttle valve group controls the connection between the water-side and air-side heat exchangers; and a hot water exchange pipe connected to the water tank of the water-side heat exchanger is installed inside the hull. This allows the system to flexibly switch and combine the operation of the water-side, seawater-side, and air-side heat exchangers according to different operating conditions. This enables multi-condition switching and efficient, stable operation within the hull, including single cooling, single heating, combined cooling and hot water supply, combined heating and hot water supply, and single hot water operation. Simultaneously, it fully utilizes the heat and cold of seawater, significantly improving energy efficiency and reducing reliance on traditional electric heating. This is both energy-saving and environmentally friendly, making it particularly suitable for ship applications with insufficient or unstable power supply. Attached Figure Description

[0015] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the marine combined cooling and heating heat pump system of this utility model; Figure 2 This is a schematic diagram of the single hot water mode of the marine combined cooling and heating heat pump system of this utility model. Figure 3 This is a schematic diagram of the dual supply mode of heating and hot water in the marine combined cooling and heating heat pump system of this utility model. Figure 4 This is a schematic diagram of the single heating mode of the marine combined cooling and heating heat pump system of this utility model. Figure 5 This is a schematic diagram of the combined cooling and hot water supply mode of the marine combined cooling and heating heat pump system of this utility model. Figure 6 This is a schematic diagram of the single-cooling mode of the marine combined cooling and heating heat pump system of this utility model. Detailed Implementation

[0017] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings of the embodiments. The described embodiments are merely some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] Based on the relatively stable temperature of seawater year-round, this application utilizes seawater as a heat source and coolant source to design a combined cooling and heating heat pump system. This system provides a multi-functional solution for summer cooling, winter heating, and year-round hot water supply, adapting to the unique environment and requirements of ship cabins. Furthermore, by using seawater as a heat source and coolant source, the combined cooling and heating heat pump system significantly improves energy efficiency and reduces reliance on traditional electric heating. It is both energy-saving and environmentally friendly, making it particularly suitable for ship applications where electricity supply is insufficient or unstable.

[0019] Please see Figure 1 The marine combined cooling and heating heat pump system of this utility model includes a compressor 10, a three-way valve 20, a four-way valve 30, a water-side heat exchanger 40, a liquid storage tank 50, a seawater-side heat exchanger 60, a throttling valve assembly module 70, and an air-side heat exchanger 80, all connected via a refrigerant circulation pipeline, as well as a temperature detection module 90, and a controller (not shown) that is communicatively connected to the throttling valve assembly module 70 and the temperature detection module 90.

[0020] Specifically, the three-way valve 20 has its inlet end D1 connected to the outlet A of the compressor 10 via a refrigerant pipeline, its outlet end C1 connected to one end of the water-side heat exchanger 40 via a refrigerant pipeline, and its working end E1 connected to the four-way valve 30 via a refrigerant pipeline.

[0021] The four-way valve 30 has its first valve port D2 connected to the working end E1 of the three-way valve 20 via a refrigerant pipeline, its second valve port E2 connected to the air-side heat exchanger 80 via a refrigerant pipeline, its third valve port C2 connected to the seawater-side heat exchanger 60 via a refrigerant pipeline, and its fourth valve port S2 connected to the return gas port B of the compressor 10 via a refrigerant pipeline.

[0022] The water-side heat exchanger 40 has its refrigerant flow path connected to the liquid storage tank 50 via a refrigerant pipeline, and its water flow path connected to the water tank 41. The water tank 41 is connected to the domestic water pipeline in the cabin to provide constant-temperature hot water to the cabin; furthermore, the outlet of the water tank 41 is connected to a heating water pump 42 to provide hot water for heating to the heating pipes in the cabin; the inlet of the water tank 41 is connected to a filter assembly 43.

[0023] The liquid storage tank 50 has a refrigerant inlet G connected to the water-side heat exchanger 40 via a refrigerant pipeline, and a refrigerant outlet H connected to the throttling valve assembly module 70 via a refrigerant pipeline.

[0024] The throttling valve group module 70 includes a first throttling valve group and a second throttling valve group. The first throttling valve group is used to control the conductive connection between the water-side heat exchanger 40 and the seawater-side heat exchanger 60, and the conductive connection between the seawater-side heat exchanger 60 and the air-side heat exchanger 80. The second throttling valve group is used to control the conductive connection between the water-side heat exchanger 40 and the air-side heat exchanger 80. The switching between multiple operating conditions—single cooling, single heating, combined cooling and hot water supply, combined heating and hot water supply, and single hot water supply—is achieved by controlling the on / off state of the first and second throttling valve groups.

[0025] The first throttling valve assembly includes a first solenoid valve 71, a first throttling component 72, and a second solenoid valve 75 connected in sequence. The first solenoid valve 71 and the first throttling component 72 are used to control the conductive connection between the water-side heat exchanger 40 and the seawater-side heat exchanger 60, and the first throttling component 72 and the second solenoid valve 75 are used to control the conductive connection between the seawater-side heat exchanger 60 and the air-side heat exchanger 80.

[0026] One end of the first solenoid valve 71 is connected to the refrigerant outlet H of the liquid storage tank 50, and the other end is connected to the first throttling assembly 72.

[0027] The first throttling component 72 includes a first throttling channel and a second throttling channel arranged in parallel.

[0028] The first throttling channel includes a capillary tube 721 and a one-way valve 722 connected in sequence, and the second throttling channel is a first electronic expansion valve 723.

[0029] One end of the capillary tube 721 is connected to the first solenoid valve 71 and the first electronic expansion valve 723 respectively, and the other end of the capillary tube 721 is connected to one end of the one-way valve 722.

[0030] The other end of the one-way valve 722 is connected to the refrigerant flow path of the seawater-side heat exchanger 60 and the first electronic expansion valve 723, respectively.

[0031] The first electronic expansion valve 723 has one end connected to the capillary tube 721 and the other end connected to the one-way valve 722.

[0032] The second solenoid valve 75 has one end connected to the first throttling assembly 72 and the first solenoid valve 71 respectively, and the other end connected to the refrigerant flow path of the air-side heat exchanger 80.

[0033] The second throttle valve assembly includes a third solenoid valve 73 and a second throttle assembly 74 connected in sequence.

[0034] The third solenoid valve 73 has one end connected to the refrigerant outlet H of the liquid storage tank 50, and the other end connected to one end of the second throttling assembly 74.

[0035] The second throttling assembly 74 has its other end connected to the refrigerant flow path of the air-side heat exchanger 80. The second throttling assembly 74 is a solenoid valve.

[0036] The seawater-side heat exchanger 60 is installed outside the hull. One end of its refrigerant flow path is connected to the first throttling valve group, and the other end of its refrigerant flow path is connected to the third valve port C2 of the four-way valve 30 through a refrigerant pipeline. Its seawater flow path is connected to the seawater pipeline outside the hull, and efficient heat exchange is achieved by utilizing flowing seawater.

[0037] The air-side heat exchanger 80 is installed inside the cabin. One end of its refrigerant flow path is connected to the second throttle valve assembly, and the other end is connected to the second valve port E2 of the four-way valve 30 via a refrigerant pipeline. A fan assembly 81 is also provided on one side of the air-side heat exchanger 80 for forced convection to enhance heat exchange efficiency. The fan assembly 81 includes a fan 811 and a heating water pipe 812. One end of the heating water pipe 812 is connected to the outlet of the water tank 41 via a heating water pump 42, and the other end is connected to the inlet of the water tank 41 via a filter assembly 43.

[0038] The temperature detection module 90 includes a first temperature sensor 91 disposed inside the water tank 41 and a second temperature sensor 92 disposed outside the fan assembly 81.

[0039] The first temperature sensor 91 is used to measure the water temperature in the water tank 41. and real-time water temperature Transmitted to the controller.

[0040] The second temperature sensor 92 is used to measure the ambient temperature inside the cabin. and real-time ambient temperature Transmitted to the controller.

[0041] The controller controls the opening and closing states of the three-way valve 20, the four-way valve 30, the first throttling valve group, and the second throttling valve group according to the preset working mode, the received water temperature, and the ambient temperature, so as to realize the automatic switching and efficient and stable operation of multiple working conditions such as single cooling, single heating, dual cooling-hot water supply, dual heating-hot water supply, and single hot water.

[0042] Specifically, please refer to Figure 2 When the marine combined cooling and heating pump system is operating in hot water mode, the heating water pump 42 is shut off, the third valve port C2 and the first valve port D2 of the four-way valve 30 are de-energized, the third solenoid valve 73 and the second solenoid valve 75 are de-energized, and the one-way valve 722 is shut off. At this time, the refrigerant flow direction is: compressor 10 exhaust port A → three-way valve 20 inlet end D1 and exhaust end C1 → water-side heat exchanger 40 → liquid storage tank 50 → first solenoid valve 71 → first electronic expansion valve 723 → seawater-side heat exchanger 60 → four-way valve 30 third valve port C2 and S1 port → compressor 10 return port B.

[0043] Please see Figure 3 When the marine combined cooling and heating heat pump system operates in heating-hot water dual-supply mode, the heating water pump 42 is started, de-energizing the third valve port C2 and the first valve port D2 of the four-way valve 30, de-energizing the third solenoid valve 73 and the second solenoid valve 75, and shutting off the one-way valve 722. At this time, the refrigerant flow direction is: compressor 10 exhaust port A → three-way valve 20 inlet end D1 and exhaust end C1 → water-side heat exchanger 40 → liquid storage tank 50 → first solenoid valve 71 → first electronic expansion valve 723 → seawater-side heat exchanger 60 → four-way valve 30 third valve port C2 and fourth valve port S2 → compressor 10 return port B. At the same time, the water supply flow direction in the water tank 41 is: water tank 41 → water pump 42 → heating water pipe 812 → filter assembly 43 → water tank 41.

[0044] Please see Figure 4When the marine combined cooling and heating heat pump system is operating in single heating mode, the exhaust end C1 of the three-way valve 20 is de-energized, the first solenoid valve 71, the third solenoid valve 73, and the second throttling component 74 are de-energized, and the one-way valve 722 is shut off. At this time, the refrigerant flow direction is: compressor 10 exhaust port A → three-way valve 20 inlet end D1, working end E1 → four-way valve first valve port D2, second valve port E2 → air-side heat exchanger 80 → second solenoid valve 75 → first electronic expansion valve 723 → seawater-side heat exchanger 60 → four-way valve 30 third valve port C2, fourth valve port S2 → compressor 10 return port B.

[0045] For heating modes, you can choose between a combined heating and hot water supply mode or a single heating mode. In the combined heating and hot water supply mode, the overall energy consumption of the heat pump system is higher due to the additional power required for the water tank's water circuit heating system, but it can supply both hot water and hot air simultaneously. In the single heating mode, the overall energy consumption of the heat pump system is lower, but it cannot provide hot water simultaneously; this mode can be used as a heating solution when the ship's electrical system has insufficient power in winter.

[0046] Please see Figure 5 When the marine combined cooling and heating heat pump system is operating in the cooling-hot water dual supply mode, the first valve port D2 and the second valve port E2 of the four-way valve 30 are de-energized, the first solenoid valve 71 is de-energized, and the second solenoid valve 75 is de-energized. At this time, the refrigerant flow direction is: compressor 10 exhaust port A → three-way valve 20 inlet end D1 and exhaust end C1 → water-side heat exchanger 40 → liquid storage tank 50 → third solenoid valve 73 → second throttling component 74 → air-side heat exchanger 80 → four-way valve 30 second valve port E2 and fourth valve port S2 → compressor 10 return port B.

[0047] Please see Figure 6 When the marine combined cooling and heating heat pump system is operating in single cooling mode, the exhaust end C1 of the three-way valve 20 is de-energized, and the first solenoid valve 71, the third solenoid valve 73, and the second throttling component 74 are also de-energized. At this time, the refrigerant flow direction is: compressor 10 exhaust port A → three-way valve 20 inlet end D1, working end E1 → four-way valve first valve port D2, third valve port C2 → seawater side heat exchanger 60 → first throttling component 72 → second solenoid valve 75 → air side heat exchanger 80 → four-way valve 30 second valve port E2, fourth valve port S2 → compressor 10 return port B.

[0048] This invention combines a three-way valve with a four-way valve, connecting the three-way valve to the water-side heat exchanger and the four-way valve to the seawater-side heat exchanger and the air-side heat exchanger. A first throttle valve group controls the connection between the water-side and seawater-side heat exchangers, and between the seawater-side and air-side heat exchangers. A second throttle valve group controls the connection between the water-side and air-side heat exchangers. A hot water pipe connected to the water tank of the water-side heat exchanger is installed inside the ship's cabin. This allows the system to flexibly switch and combine the operation of the water-side, seawater-side, and air-side heat exchangers according to different operating conditions. It enables multi-condition switching and efficient, stable operation within the ship's cabin, including single cooling, single heating, combined cooling and hot water supply, combined heating and hot water supply, and single hot water operation. Simultaneously, it fully utilizes the heat and cold of seawater, significantly improving energy efficiency and reducing reliance on traditional electric heating. This makes it both energy-saving and environmentally friendly, especially suitable for ship applications with insufficient or unstable power supply.

[0049] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0050] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" and "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0051] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A marine combined cooling and heating heat pump system, characterized in that, include: The compressor is equipped with an exhaust port and a return port; A three-way valve is provided with an inlet end, an outlet end and a working end, with the inlet end connected to the outlet port; The four-way valve is provided with a first valve port, a second valve port, a third valve port and a fourth valve port. The first valve port is connected to the working end and the fourth valve port is connected to the return air port. A water-side heat exchanger is used, with one end of its refrigerant flow path connected to the exhaust end, and its water flow path connected to a water tank, with a heating water pipe connected to the outside of the water tank. The seawater-side heat exchanger has one end of its refrigerant flow path connected to the second valve port; An air-side heat exchanger, one end of its refrigerant flow path is connected to a third valve port; The first throttling valve assembly includes a first throttling component. One end of the first throttling component is connected to the other end of the refrigerant flow path of the seawater-side heat exchanger. The other end of the first throttling component is connected to the other end of the refrigerant flow path of the water-side heat exchanger through a first solenoid valve. The other end of the first throttling component is connected to the other end of the refrigerant flow path of the air-side heat exchanger through a second solenoid valve. The second throttling valve assembly has one end connected to the other end of the refrigerant flow path of the water-side heat exchanger, and the other end connected to the other end of the refrigerant flow path of the air-side heat exchanger.

2. The marine combined cooling and heating heat pump system according to claim 1, characterized in that, The outlet of the water tank is connected to the heating water pipe via a heating water pump.

3. The marine combined cooling and heating heat pump system according to claim 2, characterized in that, The water inlet of the water tank is connected to the heating water pipe through a filter assembly.

4. The marine combined cooling and heating heat pump system according to claim 1, characterized in that, The first throttling component includes a first throttling channel and a second throttling channel arranged in parallel.

5. The marine combined cooling and heating heat pump system according to claim 4, characterized in that, The first throttling channel includes a capillary tube and a one-way valve connected in sequence. One end of the one-way valve is connected to the other end of the refrigerant flow path of the seawater-side heat exchanger, and one end of the capillary tube is connected to a first solenoid valve and a second solenoid valve, respectively.

6. The marine combined cooling and heating heat pump system according to claim 4 or 5, characterized in that, The second throttling channel is the first electronic expansion valve. One end of the first electronic expansion valve is connected to the other end of the refrigerant flow path of the seawater-side heat exchanger, and the other end of the first electronic expansion valve is connected to the first solenoid valve and the second solenoid valve respectively.

7. The marine combined cooling and heating heat pump system according to claim 1, characterized in that, The second throttling valve assembly includes a third solenoid valve and a second electronic expansion valve connected in sequence. The third solenoid valve is connected to the other end of the refrigerant flow path of the water-side heat exchanger, and the second electronic expansion valve is connected to the other end of the refrigerant flow path of the air-side heat exchanger.

8. The marine combined cooling and heating heat pump system according to claim 1, characterized in that, It also includes a liquid storage tank, the refrigerant inlet of which is connected to the other end of the refrigerant flow path of the water-side heat exchanger, and the refrigerant outlet of which is connected to the first throttling valve group and the second throttling valve group respectively.

9. The marine combined cooling and heating heat pump system according to claim 1, characterized in that, A fan is also provided on one side of the air-side heat exchanger.

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